darkcomet | a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34

General

Target

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Size

283KB
MD5

b53682a01d1e2cb83c1c19ae24f9c764
SHA1

d8c676bd8e93a6c5ddcb8f194b6fad9f9e06e2cb
SHA256

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34
SHA512

0e925211ef75719b99119e701fd0eb383fc87fba7b11fb9c40b9afd90a7973190877cae16859f0e553f2434c2a7efdb4e65a4d4170dd53079c8219d69c58fbc0
SSDEEP

6144:KcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37u:KcW7KEZlPzCy37u

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

legpkz.no-ip.biz:1604

Mutex

DC_MUTEX-6NLXV6K

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
X1ANFxb7gNlw
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:

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

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"	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2100 msdcsc.exe

pid	process
2100	msdcsc.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/768-132-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/2100-136-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/768-137-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/2100-138-0x0000000000400000-0x00000000004C7000-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:

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdcsc.exea02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeSecurityPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeTakeOwnershipPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeLoadDriverPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeSystemProfilePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeSystemtimePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeProfSingleProcessPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeIncBasePriorityPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeCreatePagefilePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeBackupPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeRestorePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeShutdownPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeDebugPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeSystemEnvironmentPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeChangeNotifyPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeRemoteShutdownPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeUndockPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeManageVolumePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeImpersonatePrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeCreateGlobalPrivilege	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: 33	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: 34	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: 35	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: 36	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
Token: SeIncreaseQuotaPrivilege	2100	msdcsc.exe
Token: SeSecurityPrivilege	2100	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2100	msdcsc.exe
Token: SeLoadDriverPrivilege	2100	msdcsc.exe
Token: SeSystemProfilePrivilege	2100	msdcsc.exe
Token: SeSystemtimePrivilege	2100	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2100	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2100	msdcsc.exe
Token: SeCreatePagefilePrivilege	2100	msdcsc.exe
Token: SeBackupPrivilege	2100	msdcsc.exe
Token: SeRestorePrivilege	2100	msdcsc.exe
Token: SeShutdownPrivilege	2100	msdcsc.exe
Token: SeDebugPrivilege	2100	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2100	msdcsc.exe
Token: SeChangeNotifyPrivilege	2100	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2100	msdcsc.exe
Token: SeUndockPrivilege	2100	msdcsc.exe
Token: SeManageVolumePrivilege	2100	msdcsc.exe
Token: SeImpersonatePrivilege	2100	msdcsc.exe
Token: SeCreateGlobalPrivilege	2100	msdcsc.exe
Token: 33	2100	msdcsc.exe
Token: 34	2100	msdcsc.exe
Token: 35	2100	msdcsc.exe
Token: 36	2100	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2100 msdcsc.exe

pid	process
2100	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe

description	pid	process	target process
PID 768 wrote to memory of 2100	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe	msdcsc.exe
PID 768 wrote to memory of 2100	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe	msdcsc.exe
PID 768 wrote to memory of 2100	768	a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe
"C:\Users\Admin\AppData\Local\Temp\a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:768

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2100

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

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:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
283KB

MD5
b53682a01d1e2cb83c1c19ae24f9c764

SHA1
d8c676bd8e93a6c5ddcb8f194b6fad9f9e06e2cb

SHA256
a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34

SHA512
0e925211ef75719b99119e701fd0eb383fc87fba7b11fb9c40b9afd90a7973190877cae16859f0e553f2434c2a7efdb4e65a4d4170dd53079c8219d69c58fbc0

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
283KB

MD5
b53682a01d1e2cb83c1c19ae24f9c764

SHA1
d8c676bd8e93a6c5ddcb8f194b6fad9f9e06e2cb

SHA256
a02b90223fa6c71c2c4f94129af9c91956f66d69746ba77767511eb42f0cbe34

SHA512
0e925211ef75719b99119e701fd0eb383fc87fba7b11fb9c40b9afd90a7973190877cae16859f0e553f2434c2a7efdb4e65a4d4170dd53079c8219d69c58fbc0

Download Submit
memory/768-132-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/768-137-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2100-133-0x0000000000000000-mapping.dmp

Download
memory/2100-136-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2100-138-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads