darkcomet | 308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80

General

Target

308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe
Size

1.1MB
MD5

77d59df8f968d49b824598d9b4734e61
SHA1

f9f0d73cae09fbfc49fe6a58d7edcbbd57594064
SHA256

308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80
SHA512

dea1defa24137b301d5c5d5777e6ad0c7129d0d8305810c68b09e0030a9f0d0f96c154887402ec107ed3b727d1a684313610008c98a05ec107ffc7169840efc4
SSDEEP

24576:Jw1lDrobPKhS0/FzDzQ0ae4iIKcRC7lZ87:iDUG/qm

Score

10^/10

darkcomet bot evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Bot

C2

thescienceguy.no-ip.biz:6754

Mutex

DC_MUTEX-XTMDCH5

Attributes

InstallPath
AVG Tray Utilities\
gencode
2d4YgnBQzJYv
install
true
offline_keylogger
true
persistence
true
reg_key
AVGTrayUtils

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:

vbc.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\\AVG Tray Utilities\\2d4YgnBQzJYv\\"	vbc.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

vbc.exe

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

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

vbc.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" vbc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	vbc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

vbc.exe

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

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

vbc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	vbc.exe

Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

AVG Tray Utility.exe

pid process

4384 AVG Tray Utility.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

Processes:

attrib.exeattrib.exe

pid process

380 attrib.exe
2084 attrib.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4384	AVG Tray Utility.exe

pid	process
380	attrib.exe
2084	attrib.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

AVG Tray Utility.exevbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AVG Tray Utility = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\AVG Tray Utility.exe\""	AVG Tray Utility.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AVGTrayUtils = "C:\\Users\\Admin\\Documents\\AVG Tray Utilities\\2d4YgnBQzJYv\\"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

AVG Tray Utility.exe

description pid process target process

PID 4384 set thread context of 3852 4384 AVG Tray Utility.exe vbc.exe

description	pid	process	target process
PID 4384 set thread context of 3852	4384	AVG Tray Utility.exe	vbc.exe

Drops file in Windows directory 2 IoCs

Processes:

attrib.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exeAVG Tray Utility.exe

pid	process
1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe
1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe
4384	AVG Tray Utility.exe
4384	AVG Tray Utility.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vbc.exe

pid process

3852 vbc.exe

pid	process
3852	vbc.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

Processes:

308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exeAVG Tray Utility.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe
Token: SeDebugPrivilege	4384	AVG Tray Utility.exe
Token: SeIncreaseQuotaPrivilege	3852	vbc.exe
Token: SeSecurityPrivilege	3852	vbc.exe
Token: SeTakeOwnershipPrivilege	3852	vbc.exe
Token: SeLoadDriverPrivilege	3852	vbc.exe
Token: SeSystemProfilePrivilege	3852	vbc.exe
Token: SeSystemtimePrivilege	3852	vbc.exe
Token: SeProfSingleProcessPrivilege	3852	vbc.exe
Token: SeIncBasePriorityPrivilege	3852	vbc.exe
Token: SeCreatePagefilePrivilege	3852	vbc.exe
Token: SeBackupPrivilege	3852	vbc.exe
Token: SeRestorePrivilege	3852	vbc.exe
Token: SeShutdownPrivilege	3852	vbc.exe
Token: SeDebugPrivilege	3852	vbc.exe
Token: SeSystemEnvironmentPrivilege	3852	vbc.exe
Token: SeChangeNotifyPrivilege	3852	vbc.exe
Token: SeRemoteShutdownPrivilege	3852	vbc.exe
Token: SeUndockPrivilege	3852	vbc.exe
Token: SeManageVolumePrivilege	3852	vbc.exe
Token: SeImpersonatePrivilege	3852	vbc.exe
Token: SeCreateGlobalPrivilege	3852	vbc.exe
Token: 33	3852	vbc.exe
Token: 34	3852	vbc.exe
Token: 35	3852	vbc.exe
Token: 36	3852	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

3852 vbc.exe

pid	process
3852	vbc.exe

Suspicious use of WriteProcessMemory 51 IoCs

Processes:

308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exeAVG Tray Utility.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 1056 wrote to memory of 4384	1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe	AVG Tray Utility.exe
PID 1056 wrote to memory of 4384	1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe	AVG Tray Utility.exe
PID 1056 wrote to memory of 4384	1056	308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe	AVG Tray Utility.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 4384 wrote to memory of 3852	4384	AVG Tray Utility.exe	vbc.exe
PID 3852 wrote to memory of 2152	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 2152	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 2152	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 3348	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 3348	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 3348	3852	vbc.exe	cmd.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3852 wrote to memory of 1076	3852	vbc.exe	notepad.exe
PID 3348 wrote to memory of 380	3348	cmd.exe	attrib.exe
PID 3348 wrote to memory of 380	3348	cmd.exe	attrib.exe
PID 3348 wrote to memory of 380	3348	cmd.exe	attrib.exe
PID 2152 wrote to memory of 2084	2152	cmd.exe	attrib.exe
PID 2152 wrote to memory of 2084	2152	cmd.exe	attrib.exe
PID 2152 wrote to memory of 2084	2152	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

380 attrib.exe
2084 attrib.exe

pid	process
380	attrib.exe
2084	attrib.exe

C:\Users\Admin\AppData\Local\Temp\308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe
"C:\Users\Admin\AppData\Local\Temp\308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1056

C:\Users\Admin\AppData\Roaming\Microsoft\AVG Tray Utility.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\AVG Tray Utility.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4384

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
3⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
4⤵
- Suspicious use of WriteProcessMemory
PID:2152

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
5⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:2084

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
4⤵
- Suspicious use of WriteProcessMemory
PID:3348

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
5⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:380

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

T1112

Disabling Security Tools

1

T1089

Hidden Files and Directories

2

T1158

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\AVG Tray Utility.exe
Filesize
1.1MB

MD5
77d59df8f968d49b824598d9b4734e61

SHA1
f9f0d73cae09fbfc49fe6a58d7edcbbd57594064

SHA256
308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80

SHA512
dea1defa24137b301d5c5d5777e6ad0c7129d0d8305810c68b09e0030a9f0d0f96c154887402ec107ed3b727d1a684313610008c98a05ec107ffc7169840efc4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\AVG Tray Utility.exe
Filesize
1.1MB

MD5
77d59df8f968d49b824598d9b4734e61

SHA1
f9f0d73cae09fbfc49fe6a58d7edcbbd57594064

SHA256
308c9be2323a416b1c1297238b4197ee58e7442c82a22490f96b9d7a3f69be80

SHA512
dea1defa24137b301d5c5d5777e6ad0c7129d0d8305810c68b09e0030a9f0d0f96c154887402ec107ed3b727d1a684313610008c98a05ec107ffc7169840efc4

Download Submit
memory/380-147-0x0000000000000000-mapping.dmp

Download
memory/1056-132-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/1056-136-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/1076-146-0x0000000000000000-mapping.dmp

Download
memory/2084-148-0x0000000000000000-mapping.dmp

Download
memory/2152-144-0x0000000000000000-mapping.dmp

Download
memory/3348-145-0x0000000000000000-mapping.dmp

Download
memory/3852-140-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3852-142-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3852-143-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3852-138-0x0000000000000000-mapping.dmp

Download
memory/3852-139-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3852-149-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4384-141-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/4384-137-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/4384-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads