darkcomet | dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

General

Target

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe
Size

758KB
MD5

363b1f1af6f481e6498a1195272abe79
SHA1

9712b3c3df12c673623fd392adb97b239986fed4
SHA256

dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7
SHA512

e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

37.53.94.245:1604

Mutex

DC_MUTEX-CA3JPES

Attributes

InstallPath
MSDCSC\msdcsa.exe
gencode
NTfqNtVkHorv
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

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsa.exe"	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

Executes dropped EXE 2 IoCs

Processes:

msdcsa.exemsdcsa.EXE

pid process

1392 msdcsa.exe
1668 msdcsa.EXE

pid	process
1392	msdcsa.exe
1668	msdcsa.EXE

Loads dropped DLL 2 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

pid	process
1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsa.exe"	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

Drops file in System32 directory 4 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXEmsdcsa.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsa.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsa.EXE	msdcsa.exe
File created	C:\Windows\SysWOW64\MSDCSC\msdcsa.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE

Suspicious use of SetThreadContext 2 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exemsdcsa.exe

description	pid	process	target process
PID 1032 set thread context of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1392 set thread context of 1668	1392	msdcsa.exe	msdcsa.EXE

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 46 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXEmsdcsa.EXE

description	pid	process
Token: SeIncreaseQuotaPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeSecurityPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeTakeOwnershipPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeLoadDriverPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeSystemProfilePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeSystemtimePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeProfSingleProcessPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeIncBasePriorityPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeCreatePagefilePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeBackupPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeRestorePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeShutdownPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeDebugPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeSystemEnvironmentPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeChangeNotifyPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeRemoteShutdownPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeUndockPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeManageVolumePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeImpersonatePrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeCreateGlobalPrivilege	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: 33	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: 34	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: 35	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
Token: SeIncreaseQuotaPrivilege	1668	msdcsa.EXE
Token: SeSecurityPrivilege	1668	msdcsa.EXE
Token: SeTakeOwnershipPrivilege	1668	msdcsa.EXE
Token: SeLoadDriverPrivilege	1668	msdcsa.EXE
Token: SeSystemProfilePrivilege	1668	msdcsa.EXE
Token: SeSystemtimePrivilege	1668	msdcsa.EXE
Token: SeProfSingleProcessPrivilege	1668	msdcsa.EXE
Token: SeIncBasePriorityPrivilege	1668	msdcsa.EXE
Token: SeCreatePagefilePrivilege	1668	msdcsa.EXE
Token: SeBackupPrivilege	1668	msdcsa.EXE
Token: SeRestorePrivilege	1668	msdcsa.EXE
Token: SeShutdownPrivilege	1668	msdcsa.EXE
Token: SeDebugPrivilege	1668	msdcsa.EXE
Token: SeSystemEnvironmentPrivilege	1668	msdcsa.EXE
Token: SeChangeNotifyPrivilege	1668	msdcsa.EXE
Token: SeRemoteShutdownPrivilege	1668	msdcsa.EXE
Token: SeUndockPrivilege	1668	msdcsa.EXE
Token: SeManageVolumePrivilege	1668	msdcsa.EXE
Token: SeImpersonatePrivilege	1668	msdcsa.EXE
Token: SeCreateGlobalPrivilege	1668	msdcsa.EXE
Token: 33	1668	msdcsa.EXE
Token: 34	1668	msdcsa.EXE
Token: 35	1668	msdcsa.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exemsdcsa.exemsdcsa.EXE

pid process

1032 643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe
1392 msdcsa.exe
1668 msdcsa.EXE

pid	process
1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe
1392	msdcsa.exe
1668	msdcsa.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXEmsdcsa.exe

description	pid	process	target process
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1032 wrote to memory of 1968	1032	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
PID 1968 wrote to memory of 1392	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE	msdcsa.exe
PID 1968 wrote to memory of 1392	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE	msdcsa.exe
PID 1968 wrote to memory of 1392	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE	msdcsa.exe
PID 1968 wrote to memory of 1392	1968	643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE	msdcsa.exe
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE
PID 1392 wrote to memory of 1668	1392	msdcsa.exe	msdcsa.EXE

C:\Users\Admin\AppData\Local\Temp\643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe
"C:\Users\Admin\AppData\Local\Temp\643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1032

C:\Users\Admin\AppData\Local\Temp\643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE
"C:\Users\Admin\AppData\Local\Temp\643360deb1ae0864baad3e8c8edea7ee5693720fe9fad84b4ddac29cb5f63891.EXE"
2⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\MSDCSC\msdcsa.exe
"C:\Windows\system32\MSDCSC\msdcsa.exe"
3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\SysWOW64\MSDCSC\msdcsa.EXE
"C:\Windows\SysWOW64\MSDCSC\msdcsa.EXE"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsa.EXE
MD5
363b1f1af6f481e6498a1195272abe79

SHA1
9712b3c3df12c673623fd392adb97b239986fed4

SHA256
dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

SHA512
e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsa.exe
MD5
363b1f1af6f481e6498a1195272abe79

SHA1
9712b3c3df12c673623fd392adb97b239986fed4

SHA256
dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

SHA512
e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsa.exe
MD5
363b1f1af6f481e6498a1195272abe79

SHA1
9712b3c3df12c673623fd392adb97b239986fed4

SHA256
dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

SHA512
e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Download Submit
\Windows\SysWOW64\MSDCSC\msdcsa.exe
MD5
363b1f1af6f481e6498a1195272abe79

SHA1
9712b3c3df12c673623fd392adb97b239986fed4

SHA256
dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

SHA512
e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Download Submit
\Windows\SysWOW64\MSDCSC\msdcsa.exe
MD5
363b1f1af6f481e6498a1195272abe79

SHA1
9712b3c3df12c673623fd392adb97b239986fed4

SHA256
dcee7332f062683247eeb635ffea3a09c742e19bb0ea0f717b43bc1663195fd7

SHA512
e4f1490741fbe4ccd51f22e45e9c76a889492f47c45085cac9f38b7b7589d4733c3db01e1a2033a56640141f4d00660fe9a58589348a39613d58db279616d758

Download Submit
memory/1392-7-0x0000000000000000-mapping.dmp

Download
memory/1668-13-0x000000000048F888-mapping.dmp

Download
memory/1968-3-0x000000000048F888-mapping.dmp

Download
memory/1968-2-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1968-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads