stealc | b1418bf6e6a65b88b7ab7eff05553f9cb656909db4c2ecba1ee79913a781702c

Analysis

max time kernel
132s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 11:59

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General

Target

9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe
Size

450KB
MD5

9c433f259204120dfbfb83fdf8b5d460
SHA1

0d4d2165eac742011b25a189bba480fded7998f2
SHA256

b1418bf6e6a65b88b7ab7eff05553f9cb656909db4c2ecba1ee79913a781702c
SHA512

75b2af6987e706c93637b0f0641a9d06c587a555d7df2220a39743ae65a04d6443fa8b7046f67ca5ac26c87e27d22f5c1af72bb0b542ec1c22d509fa63e0ee47
SSDEEP

12288:LG2lUG0NVvKXW/WqwO0YSTPZSeSnnKPkDc:LgVvoU9fsPUeSKPkDc

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/5996-63-0x00000214BE000000-0x00000214C1834000-memory.dmp	family_zgrat_v1
behavioral2/memory/5996-64-0x00000214DC090000-0x00000214DC19A000-memory.dmp	family_zgrat_v1
behavioral2/memory/5996-68-0x00000214DBE10000-0x00000214DBE34000-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

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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	u1yo.1.exe

Executes dropped EXE 2 IoCs

pid	Process
884	u1yo.0.exe
5852	u1yo.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
4136	2544	WerFault.exe	84
3792	884	WerFault.exe	91

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	u1yo.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1yo.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1yo.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	u1yo.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1yo.0.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
884	u1yo.0.exe
884	u1yo.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5996	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe
5852	u1yo.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 884	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	91
PID 2544 wrote to memory of 884	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	91
PID 2544 wrote to memory of 884	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	91
PID 2544 wrote to memory of 5852	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	95
PID 2544 wrote to memory of 5852	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	95
PID 2544 wrote to memory of 5852	2544	9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe	95
PID 5852 wrote to memory of 5996	5852	u1yo.1.exe	103
PID 5852 wrote to memory of 5996	5852	u1yo.1.exe	103

C:\Users\Admin\AppData\Local\Temp\9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\9c433f259204120dfbfb83fdf8b5d460_NEIKI.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Users\Admin\AppData\Local\Temp\u1yo.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1yo.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:884
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 884 -s 1324
    3⤵
    - Program crash
    PID:3792
- C:\Users\Admin\AppData\Local\Temp\u1yo.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1yo.1.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:5852
- - 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:5996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2544 -s 976
  2⤵
  - Program crash
  PID:4136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2544 -ip 2544
1⤵
PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 884 -ip 884
1⤵
PID:2036

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\u1yo.0.exe

Filesize
226KB

MD5
8cb22c6d983d9e4c3d48df67207e888f

SHA1
a2ddf20c0854f12fa40802d9b9df5fb6ee287089

SHA256
feb7155e62062e6f3f7ab92c1702b36315a1aebad706741d939bde25de43002d

SHA512
5ae36d56e576ccdbefc2a7ab151eb72f5e6aaf0b6e0ae72eb58e9073e2a05cc485046865e1a9764acd2cc18ba69f844cb27b3deeba8a5baac02a8a13a7ba20ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1yo.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/884-102-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-50-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-100-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-98-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/884-95-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2544-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2544-1-0x0000000001C90000-0x0000000001D90000-memory.dmp

Filesize
1024KB

Download
memory/2544-30-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2544-29-0x0000000000400000-0x0000000001A3A000-memory.dmp

Filesize
22.2MB

Download
memory/2544-2-0x0000000003670000-0x00000000036DC000-memory.dmp

Filesize
432KB

Download
memory/5852-62-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/5996-70-0x00000214DC2E0000-0x00000214DC30A000-memory.dmp

Filesize
168KB

Download
memory/5996-82-0x00000214E07A0000-0x00000214E07AE000-memory.dmp

Filesize
56KB

Download
memory/5996-69-0x00000214DBE30000-0x00000214DBE3A000-memory.dmp

Filesize
40KB

Download
memory/5996-67-0x00000214DBDB0000-0x00000214DBDC4000-memory.dmp

Filesize
80KB

Download
memory/5996-71-0x00000214DC310000-0x00000214DC3C2000-memory.dmp

Filesize
712KB

Download
memory/5996-72-0x00000214DC410000-0x00000214DC460000-memory.dmp

Filesize
320KB

Download
memory/5996-73-0x00000214DC460000-0x00000214DC482000-memory.dmp

Filesize
136KB

Download
memory/5996-74-0x00000214DBE40000-0x00000214DBE4A000-memory.dmp

Filesize
40KB

Download
memory/5996-78-0x00000214DC490000-0x00000214DC790000-memory.dmp

Filesize
3.0MB

Download
memory/5996-80-0x00000214E0E90000-0x00000214E0E98000-memory.dmp

Filesize
32KB

Download
memory/5996-81-0x00000214E07D0000-0x00000214E0808000-memory.dmp

Filesize
224KB

Download
memory/5996-68-0x00000214DBE10000-0x00000214DBE34000-memory.dmp

Filesize
144KB

Download
memory/5996-83-0x00000214E07C0000-0x00000214E07C8000-memory.dmp

Filesize
32KB

Download
memory/5996-84-0x00000214E1940000-0x00000214E194A000-memory.dmp

Filesize
40KB

Download
memory/5996-85-0x00000214E16C0000-0x00000214E1722000-memory.dmp

Filesize
392KB

Download
memory/5996-86-0x00000214E1720000-0x00000214E1742000-memory.dmp

Filesize
136KB

Download
memory/5996-87-0x00000214E1E80000-0x00000214E23A8000-memory.dmp

Filesize
5.2MB

Download
memory/5996-90-0x00000214E1740000-0x00000214E174C000-memory.dmp

Filesize
48KB

Download
memory/5996-91-0x00000214E1820000-0x00000214E1896000-memory.dmp

Filesize
472KB

Download
memory/5996-93-0x00000214E1780000-0x00000214E179E000-memory.dmp

Filesize
120KB

Download
memory/5996-65-0x00000214C3570000-0x00000214C3580000-memory.dmp

Filesize
64KB

Download
memory/5996-66-0x00000214DBDC0000-0x00000214DBDCC000-memory.dmp

Filesize
48KB

Download
memory/5996-64-0x00000214DC090000-0x00000214DC19A000-memory.dmp

Filesize
1.0MB

Download
memory/5996-63-0x00000214BE000000-0x00000214C1834000-memory.dmp

Filesize
56.2MB

Download