sheetrat | 1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1

General

Target
x1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1.exe
Size 11.8MB
Sample260608-166apsgt7r
SHA256 1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1
MD5 5c631fe6924203cb6d12f2f0964ddb51
SHA1 4b93af2a25990e7589615f194a09e04d51112240
SHA512 34006e2eb00542d0f1440485a42a39be8dfc4384fda2f67f735d85301a8cfa647b4721aece50d54f781c0c0da8defc526cf06b9d18f7bad7fe3cb8aaa76978a6
SSDEEP 196608:gDRlger67uOemwy1LR/XU3gmsRM0wWM+wC89ooEvG:XerSwAVE3XsRMiJps3
TLSH
T18BC66B1B76A646EAE073C0788E964542EFB27CC10F3157FB0052356E1EB69E48D3E636
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution sheetrat persistence privilege_escalation trojan

Malware Config

Extracted

Family

sheetrat

Version

1.8

C2

tcp3.tunnel4.com:36130

Signatures

Family: Sheetrat, NonEuclid rat
Sheetrat aka NonEuclid RAT is a trojan written in C#.
trojan sheetrat

Detects Sheetrat obfuscated V1.8 and higher 2 IoCs

Sheetrat aka NonEuclid RAT is a trojan written in C#.

resource	yara_rule
behavioral2/files/0x001a00000002b51f-15.dat	family_sheetrat_v4
behavioral2/memory/3348-24-0x0000000000600000-0x000000000067A000-memory.dmp	family_sheetrat_v4

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\svchost.exe"	Sound.exe

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 7 IoCs

pid	Process
4840	Soundpad.exe
3348	Sound.exe
4996	svchost.exe
2464	svchost.exe
1300	svchost.exe
4828	svchost.exe
1924	svchost.exe

Loads dropped DLL 7 IoCs

pid	Process
4868	Process not Found
1112	Process not Found
4996	svchost.exe
2464	svchost.exe
1300	svchost.exe
4828	svchost.exe
1924	svchost.exe

Drops file in Windows directory 16 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.exe	svchost.exe
File opened for modification	C:\Windows\svchost.exe	svchost.exe
File opened for modification	C:\Windows\svchost.exe	Sound.exe
File opened for modification	C:\Windows\DeviceHealth	Sound.exe
File opened for modification	C:\Windows\DeviceHealth	svchost.exe
File opened for modification	C:\Windows\DeviceHealth	svchost.exe
File opened for modification	C:\Windows\DeviceHealth	svchost.exe
File opened for modification	C:\Windows\DeviceHealth	svchost.exe
File created	C:\Windows\DeviceHealth	Sound.exe
File created	C:\Windows\xdwd.dll	Sound.exe
File opened for modification	C:\Windows\svchost.exe	svchost.exe
File opened for modification	C:\Windows\DeviceHealth	svchost.exe
File opened for modification	C:\Windows\svchost.exe	svchost.exe
File created	C:\Windows\svchost.exe	Sound.exe
File opened for modification	C:\Windows\xdwd.dll	Sound.exe
File opened for modification	C:\Windows\svchost.exe	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

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

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1932	schtasks.exe
396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4996	svchost.exe
4996	svchost.exe
2464	svchost.exe
2464	svchost.exe
1300	svchost.exe
1300	svchost.exe
4828	svchost.exe
4828	svchost.exe
1924	svchost.exe
1924	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3348	Sound.exe
Token: SeDebugPrivilege	4996	svchost.exe
Token: SeDebugPrivilege	2464	svchost.exe
Token: SeIncBasePriorityPrivilege	4996	svchost.exe
Token: SeDebugPrivilege	1300	svchost.exe
Token: SeDebugPrivilege	4828	svchost.exe
Token: SeDebugPrivilege	1924	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4332 wrote to memory of 4840	4332	x1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1.exe	80
PID 4332 wrote to memory of 3348	4332	x1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1.exe	81
PID 3348 wrote to memory of 1456	3348	Sound.exe	84
PID 3348 wrote to memory of 4180	3348	Sound.exe	85
PID 4180 wrote to memory of 1932	4180	cmd.exe	88
PID 3348 wrote to memory of 3260	3348	Sound.exe	89
PID 3260 wrote to memory of 396	3260	cmd.exe	91
PID 3348 wrote to memory of 2464	3348	Sound.exe	95

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\x1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1.exe
"C:\Users\Admin\AppData\Local\Temp\x1cb5d26f152031a84b892472a5050d29a5c500b7627431c69da815e118fe8af1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4332
- C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Soundpad.exe
  "C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Soundpad.exe"
  2⤵
  - Executes dropped EXE
  PID:4840
- C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Sound.exe
  "C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Sound.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Drops file in Windows directory
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3348
- - C:\Windows\SYSTEM32\CMD.exe
    "CMD" netsh advfirewall firewall add rule name="j#V]{x,:{Vr~{z" dir=in action=allow program="C:\Windows\svchost.exe" enable=yes & exit
    3⤵
    PID:1456
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\SystemDiagnostics\DeviceHealth" /tr "C:\Windows\svchost.exe" /RL HIGHEST & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4180
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\SystemDiagnostics\DeviceHealth" /tr "C:\Windows\svchost.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1932
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\Windows\WlanSvc\PolicyTask" /tr "C:\Windows\DeviceHealth" /RL HIGHEST & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3260
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 30 /tn "Microsoft\Windows\WlanSvc\PolicyTask" /tr "C:\Windows\DeviceHealth" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:396
- - C:\Windows\svchost.exe
    "C:\Windows\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2464

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4996

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1300

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4828

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1924

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
Size 642B
SHA256 07cd502f2fffb7c6a891a219527278857fed0061bac452445b945c4753899f2f
MD5 fd08d0d1c404b16d00be959c6656523f
SHA1 d4849d6219a49ab44a105a99d451ded26173470c
SHA512 2f788cb4d91b021966ae25ab68c7a0973cb1e5f53425e6324d5af71d6e0a5fcf8b15da341335acc30740a9aa4a6104502c377da1fad6e81f6460c5fd017329c5
TLSH
T166F0A2313371A0D849563F432D2C179913BF4355A150EE0C7594625DD83681B6F313E3
MD5 SHA1 SHA512 TLSH

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Sound.exe

Path C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Sound.exe
Size 465KB
SHA256 ad965dcd2c762f07fd9d3c7e14725a4a1fb4c1e492f2ee74b64d13d9e011f328
MD5 2990d35ebc40d095b29a2e70a68e16f0
SHA1 286de80949ae18bfd6b13accf8376214d6bc47dc
SHA512 e401b9a31ca3b5400184124ac013d76219aff8b1d11085f4137db9f125ab113f5456f865b62762c3f0764f3c2d929456ee617e4a50bd9eed50840978c371422c
SSDEEP 12288:kFlChz/bo5gjiiM9Eaciya975Fua+WTr4DoN1nO:h/QgjTUyanMa+0i
TLSH
T101A429153FA5CE00D484247ECABE3A49CB16A0F265026347370AF7A15D459EEDE2D3EB
MD5 SHA1 SHA512 SSDEEP TLSH

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Soundpad.exe

Path C:\Users\Admin\AppData\Local\Temp\bnd_41a661aa\Soundpad.exe
Size 10.9MB
SHA256 ed3371229647ef876b45cb5940e48b461df58d4e68ad4932f5877eba90c8d379
MD5 0ae4f60d72e0d1c159505500b8a08ebb
SHA1 bb352dafd3c3ebebb4414b799010fe5ebddbef44
SHA512 88495911df544a04a4e09828ae10b57d3d945c41d6e28964c2d4d077afa43fec1c82a8ff6dcce57a3c7b9e5d02d1e47f800f557b022866f5f7be4a2db9b07536
SSDEEP 196608:fDRlger67uOemwy1LR/XU3gmsRM0wWM+wC89ooEvu:UerSwAVE3XsRMiJpsf
TLSH
T176B68C1A76A655ECE073C1788E978543EBF3B4850B3557FB0062095E1F3BAE48E3E612
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xdwd.dll

Path C:\Windows\xdwd.dll
Size 136KB
SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
MD5 16e5a492c9c6ae34c59683be9c51fa31
SHA1 97031b41f5c56f371c28ae0d62a2df7d585adaba
SHA512 20fd369172ef5e3e2fde388666b42e8fe5f0c2bfa338c0345f45e98af6561a249ba3ecc48c3f16efcc73f02ecb67b3ddb1e2e8f0e77d18fa00ac34e6379e50b6
SSDEEP 3072:t0iX+jLyDcqaH9a6DFHo6MjD7VbZaZaZ8Xwlk4MHWZpt:t07yDSvdoRj2up
TLSH
T151D35B0772A500BFE1668638C5630A09E777B8211770DBAF33A4429D9F277E19D3AF61
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3348-24-0x0000000000600000-0x000000000067A000-memory.dmp

Download

memory/4332-0-0x0000000000960000-0x0000000001524000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads