stealc | 23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf

Analysis

max time kernel
125s
max time network
129s
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, 10:03

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General

Target

23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe
Size

368KB
MD5

2e7a0df97596447760f7c1c937992f89
SHA1

e5ae3ae5cde58bc012d8e8be0ceaf6bdae48911b
SHA256

23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf
SHA512

303f7d76a2cb6fef7cd444dd20b6fa0d03407893b3f5fce752c14cec04fa66ddc0a3bad57aa83c1f4e2f33b333bcb8c071b0972319f582321e7f097a4bb540b7
SSDEEP

6144:FelyjzIpb2xE5BNqj+DYvjZask87WlizIwYYozY/TZ4tjI:YlyjzIpbyE6yDYFask87Oi9Z4tjI

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/3180-64-0x00000181C5A80000-0x00000181C92B4000-memory.dmp	family_zgrat_v1
behavioral2/memory/3180-65-0x00000181E39D0000-0x00000181E3ADA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3180-69-0x00000181E38A0000-0x00000181E38C4000-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
4240	u2qs.0.exe
1052	u2qs.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
428	3556	WerFault.exe	79
1172	4240	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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2qs.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2qs.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2qs.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	u2qs.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2qs.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4240	u2qs.0.exe
4240	u2qs.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3180	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe
1052	u2qs.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 4240	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	81
PID 3556 wrote to memory of 4240	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	81
PID 3556 wrote to memory of 4240	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	81
PID 3556 wrote to memory of 1052	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	84
PID 3556 wrote to memory of 1052	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	84
PID 3556 wrote to memory of 1052	3556	23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe	84
PID 1052 wrote to memory of 3180	1052	u2qs.1.exe	90
PID 1052 wrote to memory of 3180	1052	u2qs.1.exe	90

C:\Users\Admin\AppData\Local\Temp\23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe
"C:\Users\Admin\AppData\Local\Temp\23625778e2d4950dbdddec627bfe03e1a9fa4a474b340e4f4ba78125d8a7b7cf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3556
- C:\Users\Admin\AppData\Local\Temp\u2qs.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2qs.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4240
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4240 -s 1176
    3⤵
    - Program crash
    PID:1172
- C:\Users\Admin\AppData\Local\Temp\u2qs.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2qs.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1052
- - 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:3180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3556 -s 996
  2⤵
  - Program crash
  PID:428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3556 -ip 3556
1⤵
PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4240 -ip 4240
1⤵
PID:4012

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
2a77171ba37642c64016dd581cdc2165

SHA1
8ab7d5db46d3662d9d415a2beaaa920a6419e23a

SHA256
acf6a213608e11fe106c46679fb79f1d6b2a71f165c710694f9bb2a84450867a

SHA512
c5c3302bc8060cdc9dfd1050678e14334a34ae3eeda1c9fa945e8040644003f188ebb1a3ea15812d8ee2b75b07d6396fdefd9f8b9ca3a0042467a52ae2276221

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2qs.0.exe

Filesize
226KB

MD5
8cb22c6d983d9e4c3d48df67207e888f

SHA1
a2ddf20c0854f12fa40802d9b9df5fb6ee287089

SHA256
feb7155e62062e6f3f7ab92c1702b36315a1aebad706741d939bde25de43002d

SHA512
5ae36d56e576ccdbefc2a7ab151eb72f5e6aaf0b6e0ae72eb58e9073e2a05cc485046865e1a9764acd2cc18ba69f844cb27b3deeba8a5baac02a8a13a7ba20ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2qs.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1052-63-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1052-51-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3180-85-0x00000181E8B80000-0x00000181E8B8A000-memory.dmp

Filesize
40KB

Download
memory/3180-73-0x00000181E3E10000-0x00000181E3E60000-memory.dmp

Filesize
320KB

Download
memory/3180-94-0x00000181E8960000-0x00000181E897E000-memory.dmp

Filesize
120KB

Download
memory/3180-92-0x00000181E8A00000-0x00000181E8A76000-memory.dmp

Filesize
472KB

Download
memory/3180-91-0x00000181E8920000-0x00000181E892C000-memory.dmp

Filesize
48KB

Download
memory/3180-88-0x00000181E9130000-0x00000181E9658000-memory.dmp

Filesize
5.2MB

Download
memory/3180-87-0x00000181E8900000-0x00000181E8922000-memory.dmp

Filesize
136KB

Download
memory/3180-86-0x00000181E8BA0000-0x00000181E8C02000-memory.dmp

Filesize
392KB

Download
memory/3180-64-0x00000181C5A80000-0x00000181C92B4000-memory.dmp

Filesize
56.2MB

Download
memory/3180-65-0x00000181E39D0000-0x00000181E3ADA000-memory.dmp

Filesize
1.0MB

Download
memory/3180-66-0x00000181CB0A0000-0x00000181CB0B0000-memory.dmp

Filesize
64KB

Download
memory/3180-67-0x00000181CB0C0000-0x00000181CB0CC000-memory.dmp

Filesize
48KB

Download
memory/3180-68-0x00000181CB0B0000-0x00000181CB0C4000-memory.dmp

Filesize
80KB

Download
memory/3180-69-0x00000181E38A0000-0x00000181E38C4000-memory.dmp

Filesize
144KB

Download
memory/3180-70-0x00000181E3B30000-0x00000181E3B3A000-memory.dmp

Filesize
40KB

Download
memory/3180-71-0x00000181E3CE0000-0x00000181E3D0A000-memory.dmp

Filesize
168KB

Download
memory/3180-72-0x00000181E3D10000-0x00000181E3DC2000-memory.dmp

Filesize
712KB

Download
memory/3180-84-0x00000181E8200000-0x00000181E8208000-memory.dmp

Filesize
32KB

Download
memory/3180-74-0x00000181E3E60000-0x00000181E3E82000-memory.dmp

Filesize
136KB

Download
memory/3180-75-0x00000181E3B40000-0x00000181E3B4A000-memory.dmp

Filesize
40KB

Download
memory/3180-79-0x00000181E3E90000-0x00000181E4190000-memory.dmp

Filesize
3.0MB

Download
memory/3180-81-0x00000181E88D0000-0x00000181E88D8000-memory.dmp

Filesize
32KB

Download
memory/3180-82-0x00000181E8210000-0x00000181E8248000-memory.dmp

Filesize
224KB

Download
memory/3180-83-0x00000181E81E0000-0x00000181E81EE000-memory.dmp

Filesize
56KB

Download
memory/3556-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3556-2-0x0000000001CC0000-0x0000000001D2C000-memory.dmp

Filesize
432KB

Download
memory/3556-1-0x0000000001D60000-0x0000000001E60000-memory.dmp

Filesize
1024KB

Download
memory/3556-29-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/3556-30-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4240-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-50-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-96-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-99-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-101-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4240-103-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download