sheetrat | 3fe00a92edf86b1567c9f27c3e2d9d8020957a3d073b4a149915c5a50e471ceb

General

Target
DeltaCrack2026.exe
Size 30.0MB
Sample260910-pefeeswwgy
SHA256 3fe00a92edf86b1567c9f27c3e2d9d8020957a3d073b4a149915c5a50e471ceb
MD5 64206803866e7384737df156c5629a34
SHA1 d8367161916fa59e08d89ec88397cd0539d8173e
SHA512 b23a8d5ac4a4814757a0f5e6b649d07e7572e485db43c39acb333102075161aa65c8c699e7061383f3bc196f3ac3d8fabb42bfdae05fba05017ed0f340db8466
SSDEEP 393216:VRBo7T6DhTqDXe2UVzhrLPS4A9n6RkpsnfiUnsIEUUcCRa8nPXsFZWd:Bom1qT2hrInQkpwfVzEy0nPXs2
TLSH
T1AC67331032C92A9EF7CA8033F35C4D92CEA29DCA797678D8368C1795366521CC1E69FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution sheetrat persistence privilege_escalation trojan

Malware Config

Extracted

Family

sheetrat

Version

1.8

C2

pidormamyebalmegaportiki-33998.portmap.host:33998

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
behavioral1/files/0x000b000000024321-6.dat	family_sheetrat_v4
behavioral1/memory/3560-13-0x0000000000340000-0x00000000003C4000-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\\System32\\xdwdDefender.exe"	DeltaCrack.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

Checks computer location settings 2 TTPs 2 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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation	DeltaCrack2026.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation	DeltaCrack.exe

Executes dropped EXE 7 IoCs

pid	Process
3560	DeltaCrack.exe
1236	delta-loader.exe
3512	xdwdDefender.exe
3968	xdwdDefender.exe
1616	xdwdMalwareDef.exe
636	xdwdDefender.exe
4560	xdwdDefender.exe

Loads dropped DLL 12 IoCs

pid	Process
2420	Process not Found
3324	Process not Found
3512	xdwdDefender.exe
3968	xdwdDefender.exe
1616	xdwdMalwareDef.exe
2980	Process not Found
636	xdwdDefender.exe
548	Process not Found
1872	Process not Found
3824	Process not Found
4552	Process not Found
4560	xdwdDefender.exe

Looks up external IP address via web service 1 TTPs 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
13	ip-api.com

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\xdwdDefender.exe	xdwdDefender.exe
File created	C:\Windows\System32\xdwdDefender.exe	DeltaCrack.exe
File opened for modification	C:\Windows\System32\xdwdDefender.exe	DeltaCrack.exe
File opened for modification	C:\Windows\System32\xdwdDefender.exe	xdwdDefender.exe
File opened for modification	C:\Windows\System32\xdwdDefender.exe	xdwdMalwareDef.exe
File opened for modification	C:\Windows\System32\xdwdDefender.exe	xdwdDefender.exe
File opened for modification	C:\Windows\System32\xdwdDefender.exe	xdwdDefender.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\xdwd.dll	DeltaCrack.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	xdwdDefender.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	xdwdMalwareDef.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	xdwdDefender.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	xdwdDefender.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	xdwdDefender.exe
File created	C:\Windows\Web\xdwdMalwareDef.exe	DeltaCrack.exe
File opened for modification	C:\Windows\Web\xdwdMalwareDef.exe	DeltaCrack.exe
File created	C:\Windows\xdwd.dll	DeltaCrack.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2124	cmd.exe
4168	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	DeltaCrack.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
636	schtasks.exe
1968	schtasks.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3560	DeltaCrack.exe
Token: SeDebugPrivilege	1236	delta-loader.exe
Token: SeDebugPrivilege	3512	xdwdDefender.exe
Token: SeDebugPrivilege	3968	xdwdDefender.exe
Token: SeDebugPrivilege	1616	xdwdMalwareDef.exe
Token: SeIncBasePriorityPrivilege	3512	xdwdDefender.exe
Token: SeDebugPrivilege	636	xdwdDefender.exe
Token: SeDebugPrivilege	4560	xdwdDefender.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1836 wrote to memory of 3560	1836	DeltaCrack2026.exe	87
PID 1836 wrote to memory of 1236	1836	DeltaCrack2026.exe	88
PID 3560 wrote to memory of 1108	3560	DeltaCrack.exe	96
PID 3560 wrote to memory of 2124	3560	DeltaCrack.exe	97
PID 2124 wrote to memory of 636	2124	cmd.exe	100
PID 3560 wrote to memory of 4168	3560	DeltaCrack.exe	101
PID 4168 wrote to memory of 1968	4168	cmd.exe	103
PID 3560 wrote to memory of 3512	3560	DeltaCrack.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\DeltaCrack2026.exe
"C:\Users\Admin\AppData\Local\Temp\DeltaCrack2026.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Users\Admin\AppData\Local\Temp\DeltaCrack.exe
  "C:\Users\Admin\AppData\Local\Temp\DeltaCrack.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3560
- - C:\Windows\SYSTEM32\CMD.exe
    "CMD" netsh advfirewall firewall add rule name=">B"YXZIQX"dEX(" dir=in action=allow program="C:\Windows\System32\xdwdDefender.exe" enable=yes & exit
    3⤵
    PID:1108
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\System32\xdwdDefender.exe" /RL HIGHEST & exit
    3⤵
    - Executes a command shell one-liner
    - Suspicious use of WriteProcessMemory
    PID:2124
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\System32\xdwdDefender.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:636
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\xdwdMalwareDef.exe" /RL HIGHEST & exit
    3⤵
    - Executes a command shell one-liner
    - Suspicious use of WriteProcessMemory
    PID:4168
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\xdwdMalwareDef.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1968
- - C:\Windows\System32\xdwdDefender.exe
    "C:\Windows\System32\xdwdDefender.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious use of AdjustPrivilegeToken
    PID:3512
- C:\Users\Admin\AppData\Local\Temp\delta-loader.exe
  "C:\Users\Admin\AppData\Local\Temp\delta-loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1236

C:\Windows\System32\xdwdDefender.exe
C:\Windows\System32\xdwdDefender.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3968

C:\Windows\Web\xdwdMalwareDef.exe
C:\Windows\Web\xdwdMalwareDef.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1616

C:\Windows\System32\xdwdDefender.exe
C:\Windows\System32\xdwdDefender.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:636

C:\Windows\System32\xdwdDefender.exe
C:\Windows\System32\xdwdDefender.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4560

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

2

T1012

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

xdwdDefender.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\xdwdDefender.exe.log
Size 642B
SHA256 f9481e31897c3d9071b744e1638942b52c46858c16ccf692f5c6e109a8b092f6
MD5 e19ed69089e56bbfaaba5e5e63d0354f
SHA1 287519bf7c4ec630e4326db00809f627f927ebef
SHA512 c4a8678d28eea4c3a3adfe0324943478efabef839d3bdacb0e4c278e97ee356037c0bfd83b096952b43d81af0b7253eb7d666416e0024ce93a1c516a834fd05b
TLSH
T18EF078313365E2D889663F16282C268803BF4765E690EE0C7594A2AED9365235F212E7
MD5 SHA1 SHA512 TLSH

Submit Download

DeltaCrack.exe

Path C:\Users\Admin\AppData\Local\Temp\DeltaCrack.exe
Size 504KB
SHA256 d0e10f520554c0496d5c8a80549599ecf1f9e4ec4f4516c11e941aab50bbc845
MD5 7c12b774b7dc1892668156064d6f82ed
SHA1 5fd65b2fa2e08158c16a9aea9a59af5f7d507671
SHA512 caa58de30bfd9afb5ac706b6aa863cfc738e17faaf8fd597c26b540e44cda85a9ced64eceadf892a0606409fbba4e31e3e651f2f9d3bf7258f6a763f0613f460
SSDEEP 12288:HaL3DeaVDHnLPZZKUKub1urMg/FqBrJZxC41KNMt+dNQcEL:MHdPb1urD/YBlTtKNc
TLSH
T1B4B407257FA88E00D584287ECA7E3609CB16E0F225027347374AB7A64D459DEDE6C3DB
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

delta-loader.exe

Path C:\Users\Admin\AppData\Local\Temp\delta-loader.exe
Size 18.1MB
SHA256 2589afce11e13a19bbb3d30dbd19714b8efa06a4abeaef08514ee2d9ee6120f1
MD5 ec0fb0cd1cf0dd9421b3c3117176790f
SHA1 62c86a3015ebd34300decaca5585b24cfd6de52e
SHA512 69c65d86495c664d378d7b1da6a6c3d861c74efb5ad626c6b254f8317286ec8528a5f47b72fd62401bbad642e60f468932c3028d9f2878a3ecc82ca79fd48bb2
SSDEEP 393216:8/ArLqGp8ZTfvrTdckWZ/y1q1sh92KzOI4is6gDgsXPW/Jz4l5IB:dLqikvrA/uq1w91X4E6XPW/Jz4s
TLSH
T1E6173301328907EDF785C073F76D4D829DA39DC67E72B8EA319C16A432A960845E7DF8
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/1236-26-0x0000000000D60000-0x0000000001F82000-memory.dmp

Download

memory/1836-0-0x0000000000F00000-0x000000000216E000-memory.dmp

Download

memory/1836-1-0x000000001CD20000-0x000000001CD30000-memory.dmp

Download

memory/3560-13-0x0000000000340000-0x00000000003C4000-memory.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads