darkcomet | ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312

General

Target

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Size

251KB
MD5

1884c58a039697b2b792929dfa2354b0
SHA1

0dbf1786a0913b67545127ecc8dd82778f3f66d0
SHA256

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
SHA512

7d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
SSDEEP

6144:pcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37Q:pcW7KEZlPzCy37

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

jemes.no-ip.biz:1604

Mutex

DC_MUTEX-8T3MCEU

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
zhwyfBmUvgRd
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:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.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\\msdcsc.exe"	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1640 msdcsc.exe

pid	process
1640	msdcsc.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	upx
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	upx
behavioral2/memory/4864-136-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1640-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1640-138-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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

Processes:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.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 48 IoCs

Processes:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeSecurityPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeTakeOwnershipPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeLoadDriverPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeSystemProfilePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeSystemtimePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeProfSingleProcessPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeIncBasePriorityPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeCreatePagefilePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeBackupPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeRestorePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeShutdownPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeDebugPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeSystemEnvironmentPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeChangeNotifyPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeRemoteShutdownPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeUndockPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeManageVolumePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeImpersonatePrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeCreateGlobalPrivilege	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: 33	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: 34	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: 35	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: 36	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Token: SeIncreaseQuotaPrivilege	1640	msdcsc.exe
Token: SeSecurityPrivilege	1640	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1640	msdcsc.exe
Token: SeLoadDriverPrivilege	1640	msdcsc.exe
Token: SeSystemProfilePrivilege	1640	msdcsc.exe
Token: SeSystemtimePrivilege	1640	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1640	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1640	msdcsc.exe
Token: SeCreatePagefilePrivilege	1640	msdcsc.exe
Token: SeBackupPrivilege	1640	msdcsc.exe
Token: SeRestorePrivilege	1640	msdcsc.exe
Token: SeShutdownPrivilege	1640	msdcsc.exe
Token: SeDebugPrivilege	1640	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1640	msdcsc.exe
Token: SeChangeNotifyPrivilege	1640	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1640	msdcsc.exe
Token: SeUndockPrivilege	1640	msdcsc.exe
Token: SeManageVolumePrivilege	1640	msdcsc.exe
Token: SeImpersonatePrivilege	1640	msdcsc.exe
Token: SeCreateGlobalPrivilege	1640	msdcsc.exe
Token: 33	1640	msdcsc.exe
Token: 34	1640	msdcsc.exe
Token: 35	1640	msdcsc.exe
Token: 36	1640	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1640 msdcsc.exe

pid	process
1640	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exe

description	pid	process	target process
PID 4864 wrote to memory of 1640	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe	msdcsc.exe
PID 4864 wrote to memory of 1640	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe	msdcsc.exe
PID 4864 wrote to memory of 1640	4864	ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe	msdcsc.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe
PID 1640 wrote to memory of 2708	1640	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
"C:\Users\Admin\AppData\Local\Temp\ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4864

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2708

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
251KB

MD5
1884c58a039697b2b792929dfa2354b0

SHA1
0dbf1786a0913b67545127ecc8dd82778f3f66d0

SHA256
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312

SHA512
7d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
251KB

MD5
1884c58a039697b2b792929dfa2354b0

SHA1
0dbf1786a0913b67545127ecc8dd82778f3f66d0

SHA256
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312

SHA512
7d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761

Download Submit
memory/1640-132-0x0000000000000000-mapping.dmp

Download
memory/1640-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1640-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2708-135-0x0000000000000000-mapping.dmp

Download
memory/4864-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads