stealc | eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d

Analysis

max time kernel
141s
max time network
127s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
08-05-2024 10:25

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General

Target

eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe
Size

368KB
MD5

c0fca742b5c3e22880408c9acf310852
SHA1

e86c87a50d159791f47eb9591ded0dd424b226a2
SHA256

eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d
SHA512

4d6af7613b719be91c4a4cf142373554c0524ea2967e0ae6cdcbba34cdf87cf25225e44b1276ba183653ca6344c3bed32045fcf9a4c15c4a1718fe06a3e0a387
SSDEEP

6144:FelyjzIpb2xE5BNqj+DYvjZask87WlizIwYYozY/TZ4tjF:YlyjzIpbyE6yDYFask87Oi9Z4tjF

Score

10^/10

stealc zgrat discovery rat stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/2760-65-0x00000281B5B00000-0x00000281B9334000-memory.dmp	family_zgrat_v1
behavioral2/memory/2760-66-0x00000281D3DB0000-0x00000281D3EBA000-memory.dmp	family_zgrat_v1
behavioral2/memory/2760-70-0x00000281D3880000-0x00000281D38A4000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3116	u1ig.0.exe
948	u1ig.1.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2576	1960	WerFault.exe	79
2272	3116	WerFault.exe	81

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ig.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ig.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ig.1.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u1ig.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1ig.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3116	u1ig.0.exe
3116	u1ig.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe
948	u1ig.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 3116	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	81
PID 1960 wrote to memory of 3116	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	81
PID 1960 wrote to memory of 3116	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	81
PID 1960 wrote to memory of 948	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	84
PID 1960 wrote to memory of 948	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	84
PID 1960 wrote to memory of 948	1960	eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe	84
PID 948 wrote to memory of 2760	948	u1ig.1.exe	90
PID 948 wrote to memory of 2760	948	u1ig.1.exe	90

C:\Users\Admin\AppData\Local\Temp\eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe
"C:\Users\Admin\AppData\Local\Temp\eab5f89ba4c54258a18703ea021b8a6ae59d4d2fe919d462edd4f1b058288e6d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\u1ig.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1ig.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3116
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 1108
    3⤵
    - Program crash
    PID:2272
- C:\Users\Admin\AppData\Local\Temp\u1ig.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1ig.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:948
- - C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
    "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 1160
  2⤵
  - Program crash
  PID:2576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1960 -ip 1960
1⤵
PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3116 -ip 3116
1⤵
PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
3KB

MD5
70946e13b1cc9eb82ba59b93ae01ff43

SHA1
65b5e6415748af4b9deff7ac7062baf2a5d96ea3

SHA256
3892cc4bc39a941830e1a558b00c1169a9636743c12a16f1971f35fd5b0d1cc7

SHA512
cfd8b8c096250ad2304fb6dbb0228a67e1d63e4908cf4c11ce68290b5056de0f7a9f127080f6f36f6f2506447709802c926192d469658bc5b50b85197ee51397

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1ig.0.exe

Filesize
226KB

MD5
8cb22c6d983d9e4c3d48df67207e888f

SHA1
a2ddf20c0854f12fa40802d9b9df5fb6ee287089

SHA256
feb7155e62062e6f3f7ab92c1702b36315a1aebad706741d939bde25de43002d

SHA512
5ae36d56e576ccdbefc2a7ab151eb72f5e6aaf0b6e0ae72eb58e9073e2a05cc485046865e1a9764acd2cc18ba69f844cb27b3deeba8a5baac02a8a13a7ba20ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1ig.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/948-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/948-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1960-2-0x0000000003760000-0x00000000037CC000-memory.dmp

Filesize
432KB

Download
memory/1960-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1960-1-0x0000000001CC0000-0x0000000001DC0000-memory.dmp

Filesize
1024KB

Download
memory/1960-31-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1960-30-0x0000000003760000-0x00000000037CC000-memory.dmp

Filesize
432KB

Download
memory/1960-29-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/2760-73-0x00000281D38F0000-0x00000281D391A000-memory.dmp

Filesize
168KB

Download
memory/2760-82-0x00000281D3F80000-0x00000281D3F88000-memory.dmp

Filesize
32KB

Download
memory/2760-65-0x00000281B5B00000-0x00000281B9334000-memory.dmp

Filesize
56.2MB

Download
memory/2760-66-0x00000281D3DB0000-0x00000281D3EBA000-memory.dmp

Filesize
1.0MB

Download
memory/2760-68-0x00000281BB150000-0x00000281BB15C000-memory.dmp

Filesize
48KB

Download
memory/2760-67-0x00000281B9930000-0x00000281B9940000-memory.dmp

Filesize
64KB

Download
memory/2760-69-0x00000281BB140000-0x00000281BB154000-memory.dmp

Filesize
80KB

Download
memory/2760-70-0x00000281D3880000-0x00000281D38A4000-memory.dmp

Filesize
144KB

Download
memory/2760-71-0x00000281D38B0000-0x00000281D38BA000-memory.dmp

Filesize
40KB

Download
memory/2760-97-0x00000281D3BF0000-0x00000281D3DA3000-memory.dmp

Filesize
1.7MB

Download
memory/2760-74-0x00000281D39A0000-0x00000281D39F0000-memory.dmp

Filesize
320KB

Download
memory/2760-72-0x00000281D3EC0000-0x00000281D3F72000-memory.dmp

Filesize
712KB

Download
memory/2760-75-0x00000281D3950000-0x00000281D3972000-memory.dmp

Filesize
136KB

Download
memory/2760-76-0x00000281BB120000-0x00000281BB12A000-memory.dmp

Filesize
40KB

Download
memory/2760-80-0x00000281D4100000-0x00000281D4400000-memory.dmp

Filesize
3.0MB

Download
memory/2760-95-0x00000281D8BB0000-0x00000281D8BCE000-memory.dmp

Filesize
120KB

Download
memory/2760-83-0x00000281D8470000-0x00000281D84A8000-memory.dmp

Filesize
224KB

Download
memory/2760-84-0x00000281D8430000-0x00000281D843E000-memory.dmp

Filesize
56KB

Download
memory/2760-85-0x00000281D8450000-0x00000281D8458000-memory.dmp

Filesize
32KB

Download
memory/2760-86-0x00000281D84F0000-0x00000281D84FA000-memory.dmp

Filesize
40KB

Download
memory/2760-87-0x00000281D8DE0000-0x00000281D8E42000-memory.dmp

Filesize
392KB

Download
memory/2760-88-0x00000281D8B60000-0x00000281D8B82000-memory.dmp

Filesize
136KB

Download
memory/2760-89-0x00000281D9370000-0x00000281D9898000-memory.dmp

Filesize
5.2MB

Download
memory/2760-92-0x00000281D8B40000-0x00000281D8B4C000-memory.dmp

Filesize
48KB

Download
memory/2760-93-0x00000281D8C50000-0x00000281D8CC6000-memory.dmp

Filesize
472KB

Download
memory/3116-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3116-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3116-98-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3116-103-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3116-107-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3116-111-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download