darkcomet | 764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

Analysis

max time kernel
202s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 16:01

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General

Target

764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Size

658KB
MD5

0674a60816e7162d22f1832b3df30b31
SHA1

d750d65c5d9765c0bfacb9a1b57858661315acdc
SHA256

764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed
SHA512

dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426
SSDEEP

12288:S9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:+Z1xuVVjfFoynPaVBUR8f+kN10EBz

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-DC6HLND

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
PPwM5rwApZoL
install
true
offline_keylogger
true
persistence
false
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1992 set thread context of 2032	1992	msdcsc.exe	28

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 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSecurityPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeTakeOwnershipPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeLoadDriverPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemProfilePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemtimePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeProfSingleProcessPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeIncBasePriorityPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeCreatePagefilePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeBackupPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeRestorePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeShutdownPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeDebugPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeSystemEnvironmentPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeChangeNotifyPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeRemoteShutdownPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeUndockPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeManageVolumePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeImpersonatePrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeCreateGlobalPrivilege	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 33	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 34	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: 35	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
Token: SeIncreaseQuotaPrivilege	1992	msdcsc.exe
Token: SeSecurityPrivilege	1992	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1992	msdcsc.exe
Token: SeLoadDriverPrivilege	1992	msdcsc.exe
Token: SeSystemProfilePrivilege	1992	msdcsc.exe
Token: SeSystemtimePrivilege	1992	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1992	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1992	msdcsc.exe
Token: SeCreatePagefilePrivilege	1992	msdcsc.exe
Token: SeBackupPrivilege	1992	msdcsc.exe
Token: SeRestorePrivilege	1992	msdcsc.exe
Token: SeShutdownPrivilege	1992	msdcsc.exe
Token: SeDebugPrivilege	1992	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1992	msdcsc.exe
Token: SeChangeNotifyPrivilege	1992	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1992	msdcsc.exe
Token: SeUndockPrivilege	1992	msdcsc.exe
Token: SeManageVolumePrivilege	1992	msdcsc.exe
Token: SeImpersonatePrivilege	1992	msdcsc.exe
Token: SeCreateGlobalPrivilege	1992	msdcsc.exe
Token: 33	1992	msdcsc.exe
Token: 34	1992	msdcsc.exe
Token: 35	1992	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2032	iexplore.exe
Token: SeSecurityPrivilege	2032	iexplore.exe
Token: SeTakeOwnershipPrivilege	2032	iexplore.exe
Token: SeLoadDriverPrivilege	2032	iexplore.exe
Token: SeSystemProfilePrivilege	2032	iexplore.exe
Token: SeSystemtimePrivilege	2032	iexplore.exe
Token: SeProfSingleProcessPrivilege	2032	iexplore.exe
Token: SeIncBasePriorityPrivilege	2032	iexplore.exe
Token: SeCreatePagefilePrivilege	2032	iexplore.exe
Token: SeBackupPrivilege	2032	iexplore.exe
Token: SeRestorePrivilege	2032	iexplore.exe
Token: SeShutdownPrivilege	2032	iexplore.exe
Token: SeDebugPrivilege	2032	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2032	iexplore.exe
Token: SeChangeNotifyPrivilege	2032	iexplore.exe
Token: SeRemoteShutdownPrivilege	2032	iexplore.exe
Token: SeUndockPrivilege	2032	iexplore.exe
Token: SeManageVolumePrivilege	2032	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2032	iexplore.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 1992	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	27
PID 1828 wrote to memory of 1992	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	27
PID 1828 wrote to memory of 1992	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	27
PID 1828 wrote to memory of 1992	1828	764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe	27
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28
PID 1992 wrote to memory of 2032	1992	msdcsc.exe	28

C:\Users\Admin\AppData\Local\Temp\764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe
"C:\Users\Admin\AppData\Local\Temp\764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
0674a60816e7162d22f1832b3df30b31

SHA1
d750d65c5d9765c0bfacb9a1b57858661315acdc

SHA256
764e86db668d28c9c0f5a599eb703fe2c9ff967c6239417d04fbc0442b9cf4ed

SHA512
dea1a1a449314d41436a56e1fe0d1fcc787eb930cb3389828b8364c1a426cd1505bdeb1e404522501f177aecd45f02376ca2310a0468eaf98ae1d7eadd478426

Download Submit
memory/1828-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads