darkcomet | 3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
23/02/2025, 22:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
Size

589KB
MD5

9755c15f9f8af5a6fa8e38b4aaf43958
SHA1

d17b8d4431713bf3aa61753c12dd42ffa7a54f74
SHA256

3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a
SHA512

14e1d0708f8c0d4497a1c192592ff058e79f5126ad3722d1220947b913b98938db594da861ab159091b42b018a85841ac38b87824a1d59b6ae1e8c3c6f87f219
SSDEEP

12288:9ffLtEIQIu7k5sscLsD5iZqHyscNExmj1NT5BzYQR8NxOz8Y5oSQ:9fTOIQIu7k5DzvLxm5Bl8sA

Score

10^/10

darkcomet botnet discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

letsgoboom.no-ip.info:1604

Mutex

DC_MUTEX-JCT2X8G

Attributes

gencode
k*q67FD+Sz0#
install
false
offline_keylogger
true
password
runescaped
persistence
false

rc4.plain

Signatures

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

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	mcsft.exe

Executes dropped EXE 3 IoCs

pid	Process
2880	mcsft.exe
2840	mcsft.exe
2704	mcsft.exe

Loads dropped DLL 7 IoCs

pid	Process
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
2880	mcsft.exe
2880	mcsft.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2880 set thread context of 2840	2880	mcsft.exe	34
PID 2880 set thread context of 2704	2880	mcsft.exe	35

UPX packed file 37 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1748-0-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/files/0x0009000000015d81-27.dat	upx
behavioral1/memory/1748-43-0x0000000003960000-0x0000000003D4A000-memory.dmp	upx
behavioral1/memory/1748-46-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2880-51-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2840-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2704-66-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2880-63-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2704-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2704-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2704-58-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2704-76-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-90-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-94-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-96-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-98-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-100-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-102-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-104-0x0000000000400000-0x00000000004B5000-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 6 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	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.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	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	mcsft.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	mcsft.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	mcsft.exe
Token: SeIncreaseQuotaPrivilege	2840	mcsft.exe
Token: SeSecurityPrivilege	2840	mcsft.exe
Token: SeTakeOwnershipPrivilege	2840	mcsft.exe
Token: SeLoadDriverPrivilege	2840	mcsft.exe
Token: SeSystemProfilePrivilege	2840	mcsft.exe
Token: SeSystemtimePrivilege	2840	mcsft.exe
Token: SeProfSingleProcessPrivilege	2840	mcsft.exe
Token: SeIncBasePriorityPrivilege	2840	mcsft.exe
Token: SeCreatePagefilePrivilege	2840	mcsft.exe
Token: SeBackupPrivilege	2840	mcsft.exe
Token: SeRestorePrivilege	2840	mcsft.exe
Token: SeShutdownPrivilege	2840	mcsft.exe
Token: SeDebugPrivilege	2840	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2840	mcsft.exe
Token: SeChangeNotifyPrivilege	2840	mcsft.exe
Token: SeRemoteShutdownPrivilege	2840	mcsft.exe
Token: SeUndockPrivilege	2840	mcsft.exe
Token: SeManageVolumePrivilege	2840	mcsft.exe
Token: SeImpersonatePrivilege	2840	mcsft.exe
Token: SeCreateGlobalPrivilege	2840	mcsft.exe
Token: 33	2840	mcsft.exe
Token: 34	2840	mcsft.exe
Token: 35	2840	mcsft.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
2880	mcsft.exe
2704	mcsft.exe
2840	mcsft.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1048	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	30
PID 1748 wrote to memory of 1048	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	30
PID 1748 wrote to memory of 1048	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	30
PID 1748 wrote to memory of 1048	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	30
PID 1048 wrote to memory of 2184	1048	cmd.exe	32
PID 1048 wrote to memory of 2184	1048	cmd.exe	32
PID 1048 wrote to memory of 2184	1048	cmd.exe	32
PID 1048 wrote to memory of 2184	1048	cmd.exe	32
PID 1748 wrote to memory of 2880	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	33
PID 1748 wrote to memory of 2880	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	33
PID 1748 wrote to memory of 2880	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	33
PID 1748 wrote to memory of 2880	1748	3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe	33
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2840	2880	mcsft.exe	34
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35
PID 2880 wrote to memory of 2704	2880	mcsft.exe	35

C:\Users\Admin\AppData\Local\Temp\3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe
"C:\Users\Admin\AppData\Local\Temp\3ff1c7d87a0a6c981923823c4bc4fbb00c9812ea14c7dbd2439864121b9d718a.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\lIXfH.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2184
- C:\Users\Admin\AppData\Roaming\mcsft.exe
  "C:\Users\Admin\AppData\Roaming\mcsft.exe"
  2⤵
  - 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:2880
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2840
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2704

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

Download Submit
C:\Users\Admin\AppData\Roaming\mcsft.exe

Filesize
589KB

MD5
47d97a3bfca38e24d1a530a0d4aae9b8

SHA1
0d2077d8e7b0ee3d5ba5e955e7f6ace6687c7619

SHA256
0c301aaef2a3b7011ec5d61086fa92f1f9f3592078ff21f6c0ca607f6e2b1794

SHA512
cf4f36abf3c63b6020e25946bf64904a5ff4b63519536146b4ac4418aa2e8591307bfc9d4ea75eba41e497310791728e3d31695079858125cefccbeef30d084a

Download Submit
memory/1748-43-0x0000000003960000-0x0000000003D4A000-memory.dmp

Filesize
3.9MB

Download
memory/1748-44-0x0000000003960000-0x0000000003D4A000-memory.dmp

Filesize
3.9MB

Download
memory/1748-46-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1748-74-0x0000000003960000-0x0000000003D4A000-memory.dmp

Filesize
3.9MB

Download
memory/1748-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2704-66-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2704-76-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2704-58-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2704-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2704-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2840-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-104-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-102-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-100-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-84-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-96-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-98-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-51-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2880-57-0x0000000002CA0000-0x000000000308A000-memory.dmp

Filesize
3.9MB

Download
memory/2880-63-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads