darkcomet | 56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

Analysis

max time kernel
152s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25/11/2022, 11:43

Sharing

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General

Target

56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Size

283KB
MD5

8c859f679398094cd891a97081ab13e2
SHA1

528e86428f7a0b885af3de45a38693bb515155de
SHA256

56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9
SHA512

4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9
SSDEEP

6144:6cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0P12:6cWkbgTYWnYnt/IDYhP12

Score

10^/10

darkcomet hacked evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

HACKED

dc-rat.hopto.org:1604

Mutex

DC_MUTEX-Z0GSXWB

Attributes

InstallPath
WindowsDefender\Update.exe
gencode
RfExL0kmflxA
install
true
offline_keylogger
true
persistence
false
reg_key
WindowsDefender

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\\AppData\\Roaming\\WindowsDefender\\Update.exe"	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

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

Executes dropped EXE 1 IoCs

pid	Process
276	Update.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
1116	attrib.exe
2016	attrib.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1228-55-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral1/files/0x000a00000001339d-60.dat	upx
behavioral1/files/0x000a00000001339d-62.dat	upx
behavioral1/files/0x000a00000001339d-64.dat	upx
behavioral1/files/0x000a00000001339d-67.dat	upx
behavioral1/files/0x000a00000001339d-66.dat	upx
behavioral1/files/0x000a00000001339d-65.dat	upx
behavioral1/memory/276-70-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral1/memory/1228-72-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral1/memory/276-73-0x0000000000400000-0x00000000004C7000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
276	Update.exe
276	Update.exe
276	Update.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsDefender = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsDefender\\Update.exe"	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.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

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSecurityPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeTakeOwnershipPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeLoadDriverPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemProfilePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemtimePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeProfSingleProcessPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeIncBasePriorityPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeCreatePagefilePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeBackupPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeRestorePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeShutdownPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeDebugPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemEnvironmentPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeChangeNotifyPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeRemoteShutdownPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeUndockPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeManageVolumePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeImpersonatePrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeCreateGlobalPrivilege	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 33	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 34	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 35	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeIncreaseQuotaPrivilege	276	Update.exe
Token: SeSecurityPrivilege	276	Update.exe
Token: SeTakeOwnershipPrivilege	276	Update.exe
Token: SeLoadDriverPrivilege	276	Update.exe
Token: SeSystemProfilePrivilege	276	Update.exe
Token: SeSystemtimePrivilege	276	Update.exe
Token: SeProfSingleProcessPrivilege	276	Update.exe
Token: SeIncBasePriorityPrivilege	276	Update.exe
Token: SeCreatePagefilePrivilege	276	Update.exe
Token: SeBackupPrivilege	276	Update.exe
Token: SeRestorePrivilege	276	Update.exe
Token: SeShutdownPrivilege	276	Update.exe
Token: SeDebugPrivilege	276	Update.exe
Token: SeSystemEnvironmentPrivilege	276	Update.exe
Token: SeChangeNotifyPrivilege	276	Update.exe
Token: SeRemoteShutdownPrivilege	276	Update.exe
Token: SeUndockPrivilege	276	Update.exe
Token: SeManageVolumePrivilege	276	Update.exe
Token: SeImpersonatePrivilege	276	Update.exe
Token: SeCreateGlobalPrivilege	276	Update.exe
Token: 33	276	Update.exe
Token: 34	276	Update.exe
Token: 35	276	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
276	Update.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 992	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	27
PID 1228 wrote to memory of 992	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	27
PID 1228 wrote to memory of 992	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	27
PID 1228 wrote to memory of 992	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	27
PID 1228 wrote to memory of 1724	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	29
PID 1228 wrote to memory of 1724	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	29
PID 1228 wrote to memory of 1724	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	29
PID 1228 wrote to memory of 1724	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	29
PID 992 wrote to memory of 1116	992	cmd.exe	31
PID 992 wrote to memory of 1116	992	cmd.exe	31
PID 992 wrote to memory of 1116	992	cmd.exe	31
PID 992 wrote to memory of 1116	992	cmd.exe	31
PID 1724 wrote to memory of 2016	1724	cmd.exe	32
PID 1724 wrote to memory of 2016	1724	cmd.exe	32
PID 1724 wrote to memory of 2016	1724	cmd.exe	32
PID 1724 wrote to memory of 2016	1724	cmd.exe	32
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 1228 wrote to memory of 276	1228	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	33
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34
PID 276 wrote to memory of 1692	276	Update.exe	34

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1116	attrib.exe
2016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
"C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2016
- C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe
  "C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:276
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:1692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
memory/276-70-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/276-71-0x00000000002E0000-0x00000000003A7000-memory.dmp

Filesize
796KB

Download
memory/276-73-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1228-55-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1228-54-0x0000000076401000-0x0000000076403000-memory.dmp

Filesize
8KB

Download
memory/1228-72-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads