darkcomet | c0a04990363e1bc879a4f40f7adbd82fe6cb788d7da4b260812c75e032cd04c6

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 21:01

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General

Target

file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Size

661KB
MD5

3d88bc329e71183ad337ecdfb0823b0c
SHA1

b2be7d64d44fb40b4afa498dd4829586bf2956c5
SHA256

c0a04990363e1bc879a4f40f7adbd82fe6cb788d7da4b260812c75e032cd04c6
SHA512

c83453bbb0bafec6f632e6b6feffc540622f97d47d4290f6b127e2fed31c7e8d20e9fda43eab3f592f56a3aa2ba66c2a39a752e2576de97e3d26e52b7cffe0a1
SSDEEP

12288:A9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h:kZ1xuVVjfFoynPaVBUR8f+kN10EB

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

test213.no-ip.info:1604

Mutex

DC_MUTEX-KHNEW06

Attributes

InstallPath
MSDCSC\runddl32.exe
gencode
F6FE8i2BxCpu
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2456	attrib.exe
2444	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1796	runddl32.exe

Loads dropped DLL 2 IoCs

pid	Process
1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	runddl32.exe

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 7 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runddl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1796	runddl32.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeSecurityPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeTakeOwnershipPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeLoadDriverPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeSystemProfilePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeSystemtimePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeProfSingleProcessPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeIncBasePriorityPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeCreatePagefilePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeBackupPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeRestorePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeShutdownPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeDebugPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeSystemEnvironmentPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeChangeNotifyPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeRemoteShutdownPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeUndockPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeManageVolumePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeImpersonatePrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeCreateGlobalPrivilege	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: 33	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: 34	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: 35	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
Token: SeIncreaseQuotaPrivilege	1796	runddl32.exe
Token: SeSecurityPrivilege	1796	runddl32.exe
Token: SeTakeOwnershipPrivilege	1796	runddl32.exe
Token: SeLoadDriverPrivilege	1796	runddl32.exe
Token: SeSystemProfilePrivilege	1796	runddl32.exe
Token: SeSystemtimePrivilege	1796	runddl32.exe
Token: SeProfSingleProcessPrivilege	1796	runddl32.exe
Token: SeIncBasePriorityPrivilege	1796	runddl32.exe
Token: SeCreatePagefilePrivilege	1796	runddl32.exe
Token: SeBackupPrivilege	1796	runddl32.exe
Token: SeRestorePrivilege	1796	runddl32.exe
Token: SeShutdownPrivilege	1796	runddl32.exe
Token: SeDebugPrivilege	1796	runddl32.exe
Token: SeSystemEnvironmentPrivilege	1796	runddl32.exe
Token: SeChangeNotifyPrivilege	1796	runddl32.exe
Token: SeRemoteShutdownPrivilege	1796	runddl32.exe
Token: SeUndockPrivilege	1796	runddl32.exe
Token: SeManageVolumePrivilege	1796	runddl32.exe
Token: SeImpersonatePrivilege	1796	runddl32.exe
Token: SeCreateGlobalPrivilege	1796	runddl32.exe
Token: 33	1796	runddl32.exe
Token: 34	1796	runddl32.exe
Token: 35	1796	runddl32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1796	runddl32.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 2304	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	30
PID 1864 wrote to memory of 2304	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	30
PID 1864 wrote to memory of 2304	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	30
PID 1864 wrote to memory of 2304	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	30
PID 1864 wrote to memory of 1340	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	31
PID 1864 wrote to memory of 1340	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	31
PID 1864 wrote to memory of 1340	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	31
PID 1864 wrote to memory of 1340	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	31
PID 2304 wrote to memory of 2456	2304	cmd.exe	34
PID 2304 wrote to memory of 2456	2304	cmd.exe	34
PID 2304 wrote to memory of 2456	2304	cmd.exe	34
PID 2304 wrote to memory of 2456	2304	cmd.exe	34
PID 1340 wrote to memory of 2444	1340	cmd.exe	35
PID 1340 wrote to memory of 2444	1340	cmd.exe	35
PID 1340 wrote to memory of 2444	1340	cmd.exe	35
PID 1340 wrote to memory of 2444	1340	cmd.exe	35
PID 1864 wrote to memory of 1796	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	36
PID 1864 wrote to memory of 1796	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	36
PID 1864 wrote to memory of 1796	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	36
PID 1864 wrote to memory of 1796	1864	file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe	36
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37
PID 1796 wrote to memory of 2656	1796	runddl32.exe	37

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2456	attrib.exe
2444	attrib.exe

C:\Users\Admin\AppData\Local\Temp\file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe
"C:\Users\Admin\AppData\Local\Temp\file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\file.0x3eee8690.0x85959ab8.ImageSectionObject.runddl32.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1340
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2444
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe

Filesize
661KB

MD5
3d88bc329e71183ad337ecdfb0823b0c

SHA1
b2be7d64d44fb40b4afa498dd4829586bf2956c5

SHA256
c0a04990363e1bc879a4f40f7adbd82fe6cb788d7da4b260812c75e032cd04c6

SHA512
c83453bbb0bafec6f632e6b6feffc540622f97d47d4290f6b127e2fed31c7e8d20e9fda43eab3f592f56a3aa2ba66c2a39a752e2576de97e3d26e52b7cffe0a1

Download Submit
memory/1796-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1796-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1864-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1864-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2656-13-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2656-51-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads