stealc | 25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c

Analysis

max time kernel
139s
max time network
139s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
09/05/2024, 15:47

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General

Target

25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe
Size

382KB
MD5

6b68f67dce69cec28b7d86cf293edce9
SHA1

02bb5634c25be1e28e5024a3d7bc9637dcb4ed2b
SHA256

25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c
SHA512

348551193c07b7d22557e0ef449e12aff309b2844b05153a2669b433760c662569794ea77ee29ec1fb92f72e27134c3d02d81aa7dc1757abde5f5dfb8bd3e8d4
SSDEEP

6144:6vNgu2vVzeAvNremF2xnbfS13eB43pvuL7HpyEeJKXK:6vNL2vVSzmQxnbf4mCSHpy9JKXK

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/3616-66-0x0000021091870000-0x00000210950A4000-memory.dmp	family_zgrat_v1
behavioral2/memory/3616-68-0x00000210AF840000-0x00000210AF94A000-memory.dmp	family_zgrat_v1
behavioral2/memory/3616-72-0x00000210AF620000-0x00000210AF644000-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
3216	u1sg.0.exe
1652	u1sg.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
2312	2320	WerFault.exe	78
2856	3216	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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1sg.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1sg.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1sg.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	u1sg.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1sg.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3216	u1sg.0.exe
3216	u1sg.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe
1652	u1sg.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 3216	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	81
PID 2320 wrote to memory of 3216	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	81
PID 2320 wrote to memory of 3216	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	81
PID 2320 wrote to memory of 1652	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	84
PID 2320 wrote to memory of 1652	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	84
PID 2320 wrote to memory of 1652	2320	25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe	84
PID 1652 wrote to memory of 3616	1652	u1sg.1.exe	89
PID 1652 wrote to memory of 3616	1652	u1sg.1.exe	89

C:\Users\Admin\AppData\Local\Temp\25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe
"C:\Users\Admin\AppData\Local\Temp\25e0a373d37e3e98f1f8a811b7fcbb59ef58bf1aa07b4868d23fbd28c997615c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Users\Admin\AppData\Local\Temp\u1sg.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1sg.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 800
    3⤵
    - Program crash
    PID:2856
- C:\Users\Admin\AppData\Local\Temp\u1sg.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1sg.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1652
- - 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:3616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 1516
  2⤵
  - Program crash
  PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2320 -ip 2320
1⤵
PID:2424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3216 -ip 3216
1⤵
PID:360

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
577fb6926140122272a7331d51d24637

SHA1
611c89a920042951a39c422b73955b12f1636e76

SHA256
273620ae4e9fa79d53fcefdbd051ce0e7d292017ee7d672215c863198294fbb5

SHA512
d278da4b77fdc2d22aed48a682293372c37a32ff4dde0d29f97abe66ec5033f34e81e74edba3719ae162000ae7f5e7a43ef0d86a4286e40001e91402c73c190b

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1sg.0.exe

Filesize
218KB

MD5
967d1d2071a7f0afa075145319eea73d

SHA1
43208843e80266106e5c96867e7113e90a6f0b59

SHA256
dce56b03d138ced62c5137c164d18240efe3e4a084c70547614b657e2049c6af

SHA512
a7934590abdf271c8ce450ef02bd2fef6aecded10390312f7a340071920e8044886a28dfa8fc415c7da6971c79e85347c5669d73da4a179fc8a56838cd114669

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1sg.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1652-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1652-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2320-16-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/2320-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2320-35-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/2320-1-0x0000000002D00000-0x0000000002E00000-memory.dmp

Filesize
1024KB

Download
memory/2320-2-0x0000000004890000-0x00000000048FC000-memory.dmp

Filesize
432KB

Download
memory/2320-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3216-62-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3216-106-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3216-67-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3216-103-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3216-101-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3216-99-0x0000000000400000-0x0000000002AF4000-memory.dmp

Filesize
39.0MB

Download
memory/3616-74-0x00000210AFAD0000-0x00000210AFB82000-memory.dmp

Filesize
712KB

Download
memory/3616-86-0x00000210B3FE0000-0x00000210B3FEE000-memory.dmp

Filesize
56KB

Download
memory/3616-75-0x00000210AFB90000-0x00000210AFBBA000-memory.dmp

Filesize
168KB

Download
memory/3616-71-0x0000021096EC0000-0x0000021096ED4000-memory.dmp

Filesize
80KB

Download
memory/3616-73-0x00000210AFAA0000-0x00000210AFAAA000-memory.dmp

Filesize
40KB

Download
memory/3616-76-0x00000210AFC10000-0x00000210AFC60000-memory.dmp

Filesize
320KB

Download
memory/3616-77-0x00000210AFC60000-0x00000210AFC82000-memory.dmp

Filesize
136KB

Download
memory/3616-78-0x0000021095520000-0x000002109552A000-memory.dmp

Filesize
40KB

Download
memory/3616-82-0x00000210AFC90000-0x00000210AFF90000-memory.dmp

Filesize
3.0MB

Download
memory/3616-84-0x00000210B3910000-0x00000210B3918000-memory.dmp

Filesize
32KB

Download
memory/3616-85-0x00000210B4010000-0x00000210B4048000-memory.dmp

Filesize
224KB

Download
memory/3616-72-0x00000210AF620000-0x00000210AF644000-memory.dmp

Filesize
144KB

Download
memory/3616-87-0x00000210B4000000-0x00000210B4008000-memory.dmp

Filesize
32KB

Download
memory/3616-88-0x00000210B46E0000-0x00000210B46EA000-memory.dmp

Filesize
40KB

Download
memory/3616-89-0x00000210B4990000-0x00000210B49F2000-memory.dmp

Filesize
392KB

Download
memory/3616-90-0x00000210B4700000-0x00000210B4722000-memory.dmp

Filesize
136KB

Download
memory/3616-91-0x00000210B4F20000-0x00000210B5448000-memory.dmp

Filesize
5.2MB

Download
memory/3616-94-0x00000210B4720000-0x00000210B472C000-memory.dmp

Filesize
48KB

Download
memory/3616-95-0x00000210B4800000-0x00000210B4876000-memory.dmp

Filesize
472KB

Download
memory/3616-96-0x00000210B4760000-0x00000210B477E000-memory.dmp

Filesize
120KB

Download
memory/3616-68-0x00000210AF840000-0x00000210AF94A000-memory.dmp

Filesize
1.0MB

Download
memory/3616-70-0x00000210AF5A0000-0x00000210AF5AC000-memory.dmp

Filesize
48KB

Download
memory/3616-69-0x0000021096EB0000-0x0000021096EC0000-memory.dmp

Filesize
64KB

Download
memory/3616-66-0x0000021091870000-0x00000210950A4000-memory.dmp

Filesize
56.2MB

Download