darkcomet | 85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc

General

Target

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Size

261KB
MD5

4530a82649bd16a3a7baa70faa1caa50
SHA1

f9ce0ceaa7bccf18ef23570e0d550d9b43e9e166
SHA256

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc
SHA512

3721f299f303b8c040a43a020a09fb55ef412b59d597e1bc6b8a3e5bc886afc44859832693c45e6eef5ff0f5d83760f81bb78bb59c5b3c7d656f277b5b63fb30
SSDEEP

6144:Hco4dnaXTsWxDcQHlemO9fRI6oh/h8oGWINlmR9wryQ:8PnaDskYaAmU66yh5GHD09AyQ

Score

10^/10

darkcomet hack aspackv2 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

hack

C2

bikaalov.noip.me:1604

Mutex

DC_MUTEX-7G2PFJD

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
tKukSM5w3M83
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

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.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"	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.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

Windows security bypass 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

msdcsc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

ASPack v2.12-2.42 3 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	aspack_v212_v242
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	aspack_v212_v242
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	aspack_v212_v242

Executes dropped EXE 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid process

4324 msdcsc.exe
4548 msdcsc.exe

pid	process
4324	msdcsc.exe
4548	msdcsc.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2824-135-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-136-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-139-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-140-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-141-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2824-142-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4548-156-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4548-157-0x0000000000400000-0x00000000004B7000-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:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

msdcsc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exemsdcsc.exe

description	pid	process	target process
PID 700 set thread context of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 4324 set thread context of 4548	4324	msdcsc.exe	msdcsc.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:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeSecurityPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeTakeOwnershipPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeLoadDriverPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeSystemProfilePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeSystemtimePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeProfSingleProcessPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeIncBasePriorityPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeCreatePagefilePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeBackupPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeRestorePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeShutdownPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeDebugPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeSystemEnvironmentPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeChangeNotifyPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeRemoteShutdownPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeUndockPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeManageVolumePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeImpersonatePrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeCreateGlobalPrivilege	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: 33	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: 34	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: 35	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: 36	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
Token: SeIncreaseQuotaPrivilege	4548	msdcsc.exe
Token: SeSecurityPrivilege	4548	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4548	msdcsc.exe
Token: SeLoadDriverPrivilege	4548	msdcsc.exe
Token: SeSystemProfilePrivilege	4548	msdcsc.exe
Token: SeSystemtimePrivilege	4548	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4548	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4548	msdcsc.exe
Token: SeCreatePagefilePrivilege	4548	msdcsc.exe
Token: SeBackupPrivilege	4548	msdcsc.exe
Token: SeRestorePrivilege	4548	msdcsc.exe
Token: SeShutdownPrivilege	4548	msdcsc.exe
Token: SeDebugPrivilege	4548	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4548	msdcsc.exe
Token: SeChangeNotifyPrivilege	4548	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4548	msdcsc.exe
Token: SeUndockPrivilege	4548	msdcsc.exe
Token: SeManageVolumePrivilege	4548	msdcsc.exe
Token: SeImpersonatePrivilege	4548	msdcsc.exe
Token: SeCreateGlobalPrivilege	4548	msdcsc.exe
Token: 33	4548	msdcsc.exe
Token: 34	4548	msdcsc.exe
Token: 35	4548	msdcsc.exe
Token: 36	4548	msdcsc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exemsdcsc.exemsdcsc.exe

pid process

700 85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
4324 msdcsc.exe
4548 msdcsc.exe

pid	process
700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
4324	msdcsc.exe
4548	msdcsc.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exemsdcsc.exe

description	pid	process	target process
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 700 wrote to memory of 2824	700	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
PID 2824 wrote to memory of 4324	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	msdcsc.exe
PID 2824 wrote to memory of 4324	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	msdcsc.exe
PID 2824 wrote to memory of 4324	2824	85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe
PID 4324 wrote to memory of 4548	4324	msdcsc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
"C:\Users\Admin\AppData\Local\Temp\85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:700

C:\Users\Admin\AppData\Local\Temp\85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc.exe
2⤵
- 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:2824

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4324

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
4⤵
- Modifies firewall policy service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4548

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

5

T1112

Disabling Security Tools

2

T1089

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
261KB

MD5
4530a82649bd16a3a7baa70faa1caa50

SHA1
f9ce0ceaa7bccf18ef23570e0d550d9b43e9e166

SHA256
85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc

SHA512
3721f299f303b8c040a43a020a09fb55ef412b59d597e1bc6b8a3e5bc886afc44859832693c45e6eef5ff0f5d83760f81bb78bb59c5b3c7d656f277b5b63fb30

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
261KB

MD5
4530a82649bd16a3a7baa70faa1caa50

SHA1
f9ce0ceaa7bccf18ef23570e0d550d9b43e9e166

SHA256
85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc

SHA512
3721f299f303b8c040a43a020a09fb55ef412b59d597e1bc6b8a3e5bc886afc44859832693c45e6eef5ff0f5d83760f81bb78bb59c5b3c7d656f277b5b63fb30

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
261KB

MD5
4530a82649bd16a3a7baa70faa1caa50

SHA1
f9ce0ceaa7bccf18ef23570e0d550d9b43e9e166

SHA256
85fdde2e17ec0b56ce564a98c6220745c6950f44932abe5dce5cba66605db2bc

SHA512
3721f299f303b8c040a43a020a09fb55ef412b59d597e1bc6b8a3e5bc886afc44859832693c45e6eef5ff0f5d83760f81bb78bb59c5b3c7d656f277b5b63fb30

Download Submit
memory/700-138-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2824-142-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-140-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-141-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-134-0x0000000000000000-mapping.dmp

Download
memory/2824-135-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2824-139-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4324-146-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/4324-143-0x0000000000000000-mapping.dmp

Download
memory/4324-155-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/4548-149-0x0000000000000000-mapping.dmp

Download
memory/4548-156-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4548-157-0x0000000000400000-0x00000000004B7000-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