darkcomet | a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035

Analysis

max time kernel
62s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 07:06

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General

Target
a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe
Size 1022KB
Sample221011-hw6jlsbfaq
SHA256 a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035
MD5 71aa732bc440747865b80aa4ae6b7964
SHA1 3fcee2da11b8c942ba2029f074e3452ca74d5d47
SHA512 58ca1d67623fa73dec810467a22842c6c761f843b6eae7d1da27b060db1c39b919bc98284ff2d94602aa4a8a929cff2d3126d82acd1d2464ecdd7e2674c8e6b8
SSDEEP 24576:6vOTggIRfmQX3zRYC6FVZPv+FWe4Ys/EWc:KjYlDZ3+UT/EW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

86.19.152.61:1604

Mutex

DC_MUTEX-3SXRNQA

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
25DXBoo5LzAj
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
2108	svchost.exe
224	msdcsc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
3972	attrib.exe
552	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "C:\\Users\\Admin\\AppData\\Roaming\\a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe"	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4628 set thread context of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2108	svchost.exe
Token: SeSecurityPrivilege	2108	svchost.exe
Token: SeTakeOwnershipPrivilege	2108	svchost.exe
Token: SeLoadDriverPrivilege	2108	svchost.exe
Token: SeSystemProfilePrivilege	2108	svchost.exe
Token: SeSystemtimePrivilege	2108	svchost.exe
Token: SeProfSingleProcessPrivilege	2108	svchost.exe
Token: SeIncBasePriorityPrivilege	2108	svchost.exe
Token: SeCreatePagefilePrivilege	2108	svchost.exe
Token: SeBackupPrivilege	2108	svchost.exe
Token: SeRestorePrivilege	2108	svchost.exe
Token: SeShutdownPrivilege	2108	svchost.exe
Token: SeDebugPrivilege	2108	svchost.exe
Token: SeSystemEnvironmentPrivilege	2108	svchost.exe
Token: SeChangeNotifyPrivilege	2108	svchost.exe
Token: SeRemoteShutdownPrivilege	2108	svchost.exe
Token: SeUndockPrivilege	2108	svchost.exe
Token: SeManageVolumePrivilege	2108	svchost.exe
Token: SeImpersonatePrivilege	2108	svchost.exe
Token: SeCreateGlobalPrivilege	2108	svchost.exe
Token: 33	2108	svchost.exe
Token: 34	2108	svchost.exe
Token: 35	2108	svchost.exe
Token: 36	2108	svchost.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 4628 wrote to memory of 2108	4628	a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe	84
PID 2108 wrote to memory of 3552	2108	svchost.exe	86
PID 2108 wrote to memory of 3552	2108	svchost.exe	86
PID 2108 wrote to memory of 3552	2108	svchost.exe	86
PID 2108 wrote to memory of 3944	2108	svchost.exe	88
PID 2108 wrote to memory of 3944	2108	svchost.exe	88
PID 2108 wrote to memory of 3944	2108	svchost.exe	88
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 1844	2108	svchost.exe	90
PID 2108 wrote to memory of 224	2108	svchost.exe	91
PID 2108 wrote to memory of 224	2108	svchost.exe	91
PID 2108 wrote to memory of 224	2108	svchost.exe	91
PID 3552 wrote to memory of 3972	3552	cmd.exe	93
PID 3552 wrote to memory of 3972	3552	cmd.exe	93
PID 3552 wrote to memory of 3972	3552	cmd.exe	93
PID 3944 wrote to memory of 552	3944	cmd.exe	94
PID 3944 wrote to memory of 552	3944	cmd.exe	94
PID 3944 wrote to memory of 552	3944	cmd.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3972	attrib.exe
552	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe
"C:\Users\Admin\AppData\Local\Temp\a0c68d73c01a70d1ed9b984d7a92d7a33d2b6b76fb48774137443c538b9a1035.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3552
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:3972
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3944
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:552
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:1844
- - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:224

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

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msdcsc.exe

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

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svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\svchost.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

Submit Download

svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\svchost.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2108-140-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/2108-142-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/2108-137-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/2108-148-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/2108-136-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/2108-133-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/4628-138-0x0000000074BF0000-0x00000000751A1000-memory.dmp

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memory/4628-151-0x0000000074BF0000-0x00000000751A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads