dcrat | 76d09603b6280d22dcd73e00a87210a9b24273f93074031fd6a7134559544eae

General

Target
SpooferTracex.bat.exe
Size 1.1MB
Sample260710-ttfe7afs2w
SHA256 76d09603b6280d22dcd73e00a87210a9b24273f93074031fd6a7134559544eae
MD5 d82f8f7b42041ebb28438c9bb0a40520
SHA1 0acb7e84cec264ac0f560a5fdf3035ed67236e1d
SHA512 064bbaa126f1193a7ce13ef67ac4cc7e10d6fd6bdcf62902be5b82a1b891cb4eea58c4b183fd874ed1550983548115ad66ed681c66cfa5fa6013fd0b638fc0b2
SSDEEP 12288:aRZ+IoG/n9IQxW3OBsee2X+t4RbZtBUPaHG8dasZPB877aMJO9R8rfQ5KAPVnYlG:U2G/nvxW3Ww0tQaHtasE7297Y9e77SzE
TLSH
T1594539017E44CE11F0191633C2EF490847B4AC552BA6E72B7EBA376E65123A37D1DACB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution dcrat infostealer persistence rat

Malware Config

Signatures

Family: DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x000700000002459f-10.dat	dcrat
behavioral1/memory/4972-12-0x00000000002E0000-0x00000000003B6000-memory.dmp	dcrat

Process spawned unexpected child process 6 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	308	3964	schtasks.exe	95
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2908	3964	schtasks.exe	95
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2588	3964	schtasks.exe	95
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4776	3964	schtasks.exe	95
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1616	3964	schtasks.exe	95
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4836	3964	schtasks.exe	95

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	SpooferTracex.bat.exe
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	hypercontainerperf.exe

Executes dropped EXE 3 IoCs

pid	Process
4972	hypercontainerperf.exe
4852	cmd.exe
4952	TextInputHost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\L2Schemas\cmd.exe	hypercontainerperf.exe
File created	C:\Windows\L2Schemas\ebf1f9fa8afd6d	hypercontainerperf.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SpooferTracex.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\Local Settings	SpooferTracex.bat.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
308	schtasks.exe
2908	schtasks.exe
2588	schtasks.exe
4776	schtasks.exe
1616	schtasks.exe
4836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4972	hypercontainerperf.exe
4852	cmd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4972	hypercontainerperf.exe
Token: SeDebugPrivilege	4852	cmd.exe
Token: SeDebugPrivilege	4952	TextInputHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 2788	4492	SpooferTracex.bat.exe	86
PID 2788 wrote to memory of 4140	2788	WScript.exe	97
PID 4140 wrote to memory of 4972	4140	cmd.exe	99
PID 4972 wrote to memory of 4852	4972	hypercontainerperf.exe	106

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\SpooferTracex.bat.exe
"C:\Users\Admin\AppData\Local\Temp\SpooferTracex.bat.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\HyperagentbrowserSession\Ws0PN9fBAd1L6fxZj8tMqJ3g0.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\HyperagentbrowserSession\IXdOMEm9S.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4140
  - - C:\HyperagentbrowserSession\hypercontainerperf.exe
      "C:\HyperagentbrowserSession\hypercontainerperf.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4972
    - - C:\Windows\L2Schemas\cmd.exe
        
        "C:\Windows\L2Schemas\cmd.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4852

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\TextInputHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:308

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 6 /tr "'C:\Windows\L2Schemas\cmd.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Windows\L2Schemas\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4836

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 12 /tr "'C:\Windows\L2Schemas\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1616

C:\Users\All Users\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\TextInputHost.exe
"C:\Users\All Users\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\TextInputHost.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4952

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

IXdOMEm9S.bat

Path C:\HyperagentbrowserSession\IXdOMEm9S.bat
Size 52B
SHA256 1e12542c2d8297cc011540ff78dac108567a0e1dcc3d5ec9402f63f7fee68ebf
MD5 592bd9a575edbb3288ea0b297d40a21a
SHA1 776c4dcdbcda1a501554725004e2199267e51a3c
SHA512 4ecf94da0a6613fde1617a89b21e064ebfb52d7327944f22db02691772bf11a5781ce244fde679ca164161c74320ae1835150ec33822c50b500bb5b95de553f2
TLSH
T1509002004F1512336642A7082424941A2A599866DF9C1805A2154445C194415421EB98
MD5 SHA1 SHA512 TLSH

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Ws0PN9fBAd1L6fxZj8tMqJ3g0.vbe

Path C:\HyperagentbrowserSession\Ws0PN9fBAd1L6fxZj8tMqJ3g0.vbe
Size 211B
SHA256 033bc71953cebd86c80e5ce60c5761b95f1e96e18987ba297acf407e2f93604a
MD5 dfaaad4ce1de8ab28e348ea7a7bbfad0
SHA1 cb934f0fbdba7e64ab0803eaa30fb8a55332ffb3
SHA512 5c22b71eff65e2d2d296d29e788c91ec77e2a3429c646ea2d58ad216cdb72e63d6f4c7b219e9b63ec6c027d643da7609342444b3b90c99777bdbe2055400bae9
TLSH
T151D0A7799556A958C8A42516F15088588E638683E6A2321E19ACC9145740656253C3D4
MD5 SHA1 SHA512 TLSH

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hypercontainerperf.exe

Path C:\HyperagentbrowserSession\hypercontainerperf.exe
Size 829KB
SHA256 6eba419dd4f1df82e029ca8af2802a10764ede673c42071743f17ecadd4122fe
MD5 32fbfd229e1ae340d2a6e691f6721601
SHA1 756775e03f915fbe6ec2500e0bde0caab1c11470
SHA512 2190aba0ae637bbed159e25d2de68ddbff657f3d5b6638c7071c9d5acfc131b84ab80be96f69f30f18a7fd6086e29a563ad0c3b6f453453106816253ce98b9e3
SSDEEP 12288:wtBUPaHG8dasZPB877aMJO9R8rfQ5KAPVnYl9eL77Sz:XaHtasE7297Y9e77Sz
TLSH
T16505F6017E44CE15F0191233C2EF494887B0A9556AE6E32B7DBA377E65123A77C0DACB
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4972-12-0x00000000002E0000-0x00000000003B6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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