darkcomet | cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-11-2024 05:20

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General

Target

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
Size

520KB
MD5

a72a5a91dc86a5d585d6f3b6ada76260
SHA1

0e62d8aa5d2edebaa7ea75c591727b9a3832fb8e
SHA256

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051
SHA512

6c6fc2933229cfba09de38f38f149f8903d4b7e36552818d47e79227fd5a96e5e44a32b08cfafda613cf181e41f1167bbde60f3672e0154764e0ac1e53cd312e
SSDEEP

6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMb4:f9fC3hh29Ya77A90aFtDfT5IMb4

Score

10^/10

darkcomet privateeye discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

PrivateEye

ratblackshades.no-ip.biz:1604

Mutex

DC_MUTEX-ACC1R98

Attributes

gencode
8GG5LVVGljSF
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Executes dropped EXE 3 IoCs

Processes:

winupd.exewinupd.exewinupd.exe

pid	Process
2088	winupd.exe
2168	winupd.exe
2868	winupd.exe

Loads dropped DLL 4 IoCs

Processes:

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exewinupd.exe

pid	Process
2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
2088	winupd.exe
2088	winupd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winupd.exe -notray"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exewinupd.exe

description	pid	Process	procid_target
PID 2084 set thread context of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2088 set thread context of 2168	2088	winupd.exe	32
PID 2088 set thread context of 2868	2088	winupd.exe	33

UPX packed file 24 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2868-56-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-61-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-59-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-53-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-82-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2868-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exewinupd.exewinupd.exewinupd.exeipconfig.execmd.exereg.execbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

Processes:

ipconfig.exe

pid	Process
2940	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

Processes:

reg.exe

pid	Process
1872	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

winupd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2868	winupd.exe
Token: SeSecurityPrivilege	2868	winupd.exe
Token: SeTakeOwnershipPrivilege	2868	winupd.exe
Token: SeLoadDriverPrivilege	2868	winupd.exe
Token: SeSystemProfilePrivilege	2868	winupd.exe
Token: SeSystemtimePrivilege	2868	winupd.exe
Token: SeProfSingleProcessPrivilege	2868	winupd.exe
Token: SeIncBasePriorityPrivilege	2868	winupd.exe
Token: SeCreatePagefilePrivilege	2868	winupd.exe
Token: SeBackupPrivilege	2868	winupd.exe
Token: SeRestorePrivilege	2868	winupd.exe
Token: SeShutdownPrivilege	2868	winupd.exe
Token: SeDebugPrivilege	2868	winupd.exe
Token: SeSystemEnvironmentPrivilege	2868	winupd.exe
Token: SeChangeNotifyPrivilege	2868	winupd.exe
Token: SeRemoteShutdownPrivilege	2868	winupd.exe
Token: SeUndockPrivilege	2868	winupd.exe
Token: SeManageVolumePrivilege	2868	winupd.exe
Token: SeImpersonatePrivilege	2868	winupd.exe
Token: SeCreateGlobalPrivilege	2868	winupd.exe
Token: 33	2868	winupd.exe
Token: 34	2868	winupd.exe
Token: 35	2868	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.execbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exewinupd.exewinupd.exewinupd.exe

pid	Process
2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
2088	winupd.exe
2168	winupd.exe
2868	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.execbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exewinupd.exewinupd.exeipconfig.execmd.exe

description	pid	Process	procid_target
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2084 wrote to memory of 2488	2084	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	30
PID 2488 wrote to memory of 2088	2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	31
PID 2488 wrote to memory of 2088	2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	31
PID 2488 wrote to memory of 2088	2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	31
PID 2488 wrote to memory of 2088	2488	cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe	31
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2168	2088	winupd.exe	32
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2088 wrote to memory of 2868	2088	winupd.exe	33
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2168 wrote to memory of 2940	2168	winupd.exe	34
PID 2940 wrote to memory of 2640	2940	ipconfig.exe	36
PID 2940 wrote to memory of 2640	2940	ipconfig.exe	36
PID 2940 wrote to memory of 2640	2940	ipconfig.exe	36
PID 2940 wrote to memory of 2640	2940	ipconfig.exe	36
PID 2640 wrote to memory of 1872	2640	cmd.exe	38
PID 2640 wrote to memory of 1872	2640	cmd.exe	38
PID 2640 wrote to memory of 1872	2640	cmd.exe	38
PID 2640 wrote to memory of 1872	2640	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
"C:\Users\Admin\AppData\Local\Temp\cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe
  "C:\Users\Admin\AppData\Local\Temp\cbb9963d25ed9878a8d94703f6687164b4652dde6705bed732c7494f3968f051N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2088
  - - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2168
    - - C:\Windows\SysWOW64\ipconfig.exe
        
        "C:\Windows\system32\ipconfig.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Gathers network information
        Suspicious use of WriteProcessMemory
        
        PID:2940
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\RRBNMNJH.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2640
        
        C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v WinUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray" /f
        7⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:1872
  - - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RRBNMNJH.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe

Filesize
520KB

MD5
b494d9265475b770bfb97dca184d6caf

SHA1
460a0ffe1e91724c0b995c6e09bd834ad679b5bb

SHA256
ddfe6d43547685880166cc363e77b1b0913811b7fea3d5cddccaf0c772ac0d29

SHA512
872aa142a845c4823d4ee6dfde7620bdcf09f4511aa3d659c726230b59e45406e8d89b9ade171ca1cad9517912167d31f42edc15f745683ea7359bd7f82f2b18

Download Submit
memory/2084-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2084-9-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2084-18-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2084-17-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2084-19-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-35-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2088-63-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2088-47-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2088-70-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2168-80-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2488-5-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2488-7-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2488-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2488-14-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2488-3-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2488-76-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2868-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-82-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-53-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-50-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2868-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2940-71-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download