stealc | a4896480adaeb05564bbde92150c23eeb25c0bfee294795ebfea586014d7450e

Analysis

max time kernel
132s
max time network
128s
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 14:07

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General

Target

d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe
Size

372KB
MD5

d49472a9a9abd1f27b0200ac71a6bd80
SHA1

7c48d497b1cca1d753f357d828eb1d2ceda6908d
SHA256

a4896480adaeb05564bbde92150c23eeb25c0bfee294795ebfea586014d7450e
SHA512

d994fb6fb64334f4e6f598785b802eb79c2be36b61281b5b4eb4204f8ece7e488e5bc9eb02ba5e03fcbf91b23a93ab718b4bfa5043fb6cd447d86efae744d843
SSDEEP

6144:pl+08UGGfdzF7qxvwcB793ituNKkzXwGZTapf:p808UGgdtqrhauN3Xwwapf

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/4644-64-0x0000024E3E6C0000-0x0000024E41EF4000-memory.dmp	family_zgrat_v1
behavioral2/memory/4644-65-0x0000024E5D620000-0x0000024E5D72A000-memory.dmp	family_zgrat_v1
behavioral2/memory/4644-69-0x0000024E5C470000-0x0000024E5C494000-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	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	u1rc.1.exe

Executes dropped EXE 2 IoCs

pid	Process
5032	u1rc.0.exe
436	u1rc.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
3000	2280	WerFault.exe	83
4500	5032	WerFault.exe	87

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	u1rc.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1rc.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1rc.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	u1rc.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1rc.0.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5032	u1rc.0.exe
5032	u1rc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe
436	u1rc.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 5032	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	87
PID 2280 wrote to memory of 5032	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	87
PID 2280 wrote to memory of 5032	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	87
PID 2280 wrote to memory of 436	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	93
PID 2280 wrote to memory of 436	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	93
PID 2280 wrote to memory of 436	2280	d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe	93
PID 436 wrote to memory of 4644	436	u1rc.1.exe	101
PID 436 wrote to memory of 4644	436	u1rc.1.exe	101

C:\Users\Admin\AppData\Local\Temp\d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\d49472a9a9abd1f27b0200ac71a6bd80_NEIKI.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\u1rc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1rc.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:5032
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 1304
    3⤵
    - Program crash
    PID:4500
- C:\Users\Admin\AppData\Local\Temp\u1rc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1rc.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:436
- - 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:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 1212
  2⤵
  - Program crash
  PID:3000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2280 -ip 2280
1⤵
PID:2900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5032 -ip 5032
1⤵
PID:4556

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
3710998fe8d19f3f9a1c2e2aa9447a2a

SHA1
c89069981ee4779aa36a9c7fc8e8ac31a4941606

SHA256
51ac6ca5a36caa11c26e481c6c616be4781aa8ac8072fe757f1fd09fd5c072ed

SHA512
5e31bed12fd1ee500b855df1636a82f9faed81414d76e31a6700c1f2ad501422fbccd48bd1116255a9b4e1b49e92a022b3a3a436a68efbf72f7d0f890476ed03

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1rc.0.exe

Filesize
226KB

MD5
c4b38f17b16a0b545d989a5e7f192308

SHA1
7325ba75f76855f332e840d595cadc591ea220af

SHA256
45072f942cb27587d1815a9c079c066c85ac313fe1388fd61dd69c77bdc68b4b

SHA512
ca30aa925c6bec667fa4aceda9918d9e7c1ddee1fb7eded4ee266f6f6ae2d3e2fea7070049dc28540615832fc2e60e2821aabc839f468d446b44e082558ef041

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1rc.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/436-51-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/436-63-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2280-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2280-2-0x0000000001AF0000-0x0000000001B5C000-memory.dmp

Filesize
432KB

Download
memory/2280-1-0x0000000001B70000-0x0000000001C70000-memory.dmp

Filesize
1024KB

Download
memory/2280-30-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2280-29-0x0000000000400000-0x0000000001A27000-memory.dmp

Filesize
22.2MB

Download
memory/4644-71-0x0000024E5D4A0000-0x0000024E5D4CA000-memory.dmp

Filesize
168KB

Download
memory/4644-79-0x0000024E5D9A0000-0x0000024E5DCA0000-memory.dmp

Filesize
3.0MB

Download
memory/4644-94-0x0000024E62C50000-0x0000024E62C6E000-memory.dmp

Filesize
120KB

Download
memory/4644-64-0x0000024E3E6C0000-0x0000024E41EF4000-memory.dmp

Filesize
56.2MB

Download
memory/4644-65-0x0000024E5D620000-0x0000024E5D72A000-memory.dmp

Filesize
1.0MB

Download
memory/4644-66-0x0000024E43B40000-0x0000024E43B50000-memory.dmp

Filesize
64KB

Download
memory/4644-67-0x0000024E5C460000-0x0000024E5C46C000-memory.dmp

Filesize
48KB

Download
memory/4644-68-0x0000024E43B50000-0x0000024E43B64000-memory.dmp

Filesize
80KB

Download
memory/4644-69-0x0000024E5C470000-0x0000024E5C494000-memory.dmp

Filesize
144KB

Download
memory/4644-70-0x0000024E5C4A0000-0x0000024E5C4AA000-memory.dmp

Filesize
40KB

Download
memory/4644-93-0x0000024E62CF0000-0x0000024E62D66000-memory.dmp

Filesize
472KB

Download
memory/4644-72-0x0000024E5D870000-0x0000024E5D922000-memory.dmp

Filesize
712KB

Download
memory/4644-73-0x0000024E5D920000-0x0000024E5D970000-memory.dmp

Filesize
320KB

Download
memory/4644-74-0x0000024E5D970000-0x0000024E5D992000-memory.dmp

Filesize
136KB

Download
memory/4644-75-0x0000024E5C4B0000-0x0000024E5C4BA000-memory.dmp

Filesize
40KB

Download
memory/4644-92-0x0000024E62BE0000-0x0000024E62BEC000-memory.dmp

Filesize
48KB

Download
memory/4644-81-0x0000024E61600000-0x0000024E61608000-memory.dmp

Filesize
32KB

Download
memory/4644-82-0x0000024E61D10000-0x0000024E61D48000-memory.dmp

Filesize
224KB

Download
memory/4644-83-0x0000024E61CD0000-0x0000024E61CDE000-memory.dmp

Filesize
56KB

Download
memory/4644-84-0x0000024E61CF0000-0x0000024E61CF8000-memory.dmp

Filesize
32KB

Download
memory/4644-85-0x0000024E61D90000-0x0000024E61D9A000-memory.dmp

Filesize
40KB

Download
memory/4644-86-0x0000024E62E80000-0x0000024E62EE2000-memory.dmp

Filesize
392KB

Download
memory/4644-87-0x0000024E62C00000-0x0000024E62C22000-memory.dmp

Filesize
136KB

Download
memory/4644-88-0x0000024E63410000-0x0000024E63938000-memory.dmp

Filesize
5.2MB

Download
memory/5032-50-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-96-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-98-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-100-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/5032-102-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download