stealc | 2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175

Analysis

max time kernel
133s
max time network
131s
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 10:06

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General

Target

2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe
Size

368KB
MD5

c928d71190d16ffcc234ee1061934501
SHA1

40ea2a949190aac9ad3e17d5cccb6d51014bf065
SHA256

2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175
SHA512

9d60d54298e5e3d2e8d5eea26178fbbbca09acfc621556f48f63c34f19eaf4aec8c8b9da8c211dcd1e2df167a14914fe00e92dec2128f9774475694d7f14b966
SSDEEP

6144:FelyjzIpb2xE5BNqj+DYvjZask87WlizIwYYozY/TZ4tjK:YlyjzIpbyE6yDYFask87Oi9Z4tjK

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
behavioral1/memory/4680-66-0x000001DAC3F50000-0x000001DAC7784000-memory.dmp	family_zgrat_v1
behavioral1/memory/4680-67-0x000001DAE2D80000-0x000001DAE2E8A000-memory.dmp	family_zgrat_v1
behavioral1/memory/4680-71-0x000001DAE1C50000-0x000001DAE1C74000-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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	ukc.1.exe

Executes dropped EXE 2 IoCs

pid	Process
2444	ukc.0.exe
4472	ukc.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
536	732	WerFault.exe	83
1380	2444	WerFault.exe	89

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

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2444	ukc.0.exe
2444	ukc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4680	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe
4472	ukc.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 732 wrote to memory of 2444	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	89
PID 732 wrote to memory of 2444	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	89
PID 732 wrote to memory of 2444	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	89
PID 732 wrote to memory of 4472	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	95
PID 732 wrote to memory of 4472	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	95
PID 732 wrote to memory of 4472	732	2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe	95
PID 4472 wrote to memory of 4680	4472	ukc.1.exe	103
PID 4472 wrote to memory of 4680	4472	ukc.1.exe	103

C:\Users\Admin\AppData\Local\Temp\2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe
"C:\Users\Admin\AppData\Local\Temp\2125d67c6ad89d83c34a203f62b5c63025bb710519b6c7b3c7a22c0550726175.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:732
- C:\Users\Admin\AppData\Local\Temp\ukc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\ukc.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2444
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2444 -s 1336
    3⤵
    - Program crash
    PID:1380
- C:\Users\Admin\AppData\Local\Temp\ukc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\ukc.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:4472
- - 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:4680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 732 -s 1148
  2⤵
  - Program crash
  PID:536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 732 -ip 732
1⤵
PID:676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2444 -ip 2444
1⤵
PID:2968

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\ukc.0.exe

Filesize
226KB

MD5
8cb22c6d983d9e4c3d48df67207e888f

SHA1
a2ddf20c0854f12fa40802d9b9df5fb6ee287089

SHA256
feb7155e62062e6f3f7ab92c1702b36315a1aebad706741d939bde25de43002d

SHA512
5ae36d56e576ccdbefc2a7ab151eb72f5e6aaf0b6e0ae72eb58e9073e2a05cc485046865e1a9764acd2cc18ba69f844cb27b3deeba8a5baac02a8a13a7ba20ea

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/732-2-0x0000000003660000-0x00000000036CC000-memory.dmp

Filesize
432KB

Download
memory/732-1-0x0000000001B40000-0x0000000001C40000-memory.dmp

Filesize
1024KB

Download
memory/732-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/732-30-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/732-31-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2444-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-15-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-51-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-103-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-101-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-99-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/2444-97-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4472-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4472-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4680-73-0x000001DAE2C10000-0x000001DAE2C3A000-memory.dmp

Filesize
168KB

Download
memory/4680-85-0x000001DAE7550000-0x000001DAE755E000-memory.dmp

Filesize
56KB

Download
memory/4680-72-0x000001DAE1C70000-0x000001DAE1C7A000-memory.dmp

Filesize
40KB

Download
memory/4680-70-0x000001DAC7D50000-0x000001DAC7D64000-memory.dmp

Filesize
80KB

Download
memory/4680-74-0x000001DAE3180000-0x000001DAE3232000-memory.dmp

Filesize
712KB

Download
memory/4680-75-0x000001DAE2EE0000-0x000001DAE2F30000-memory.dmp

Filesize
320KB

Download
memory/4680-76-0x000001DAE2E90000-0x000001DAE2EB2000-memory.dmp

Filesize
136KB

Download
memory/4680-77-0x000001DAE1C80000-0x000001DAE1C8A000-memory.dmp

Filesize
40KB

Download
memory/4680-81-0x000001DAE3230000-0x000001DAE3530000-memory.dmp

Filesize
3.0MB

Download
memory/4680-83-0x000001DAE7C40000-0x000001DAE7C48000-memory.dmp

Filesize
32KB

Download
memory/4680-84-0x000001DAE7580000-0x000001DAE75B8000-memory.dmp

Filesize
224KB

Download
memory/4680-71-0x000001DAE1C50000-0x000001DAE1C74000-memory.dmp

Filesize
144KB

Download
memory/4680-86-0x000001DAE7570000-0x000001DAE7578000-memory.dmp

Filesize
32KB

Download
memory/4680-87-0x000001DAE86F0000-0x000001DAE86FA000-memory.dmp

Filesize
40KB

Download
memory/4680-88-0x000001DAE8710000-0x000001DAE8772000-memory.dmp

Filesize
392KB

Download
memory/4680-89-0x000001DAE8470000-0x000001DAE8492000-memory.dmp

Filesize
136KB

Download
memory/4680-90-0x000001DAE8CA0000-0x000001DAE91C8000-memory.dmp

Filesize
5.2MB

Download
memory/4680-93-0x000001DAE8490000-0x000001DAE849C000-memory.dmp

Filesize
48KB

Download
memory/4680-94-0x000001DAE8570000-0x000001DAE85E6000-memory.dmp

Filesize
472KB

Download
memory/4680-95-0x000001DAE84D0000-0x000001DAE84EE000-memory.dmp

Filesize
120KB

Download
memory/4680-69-0x000001DAE1C00000-0x000001DAE1C0C000-memory.dmp

Filesize
48KB

Download
memory/4680-68-0x000001DAC7B70000-0x000001DAC7B80000-memory.dmp

Filesize
64KB

Download
memory/4680-67-0x000001DAE2D80000-0x000001DAE2E8A000-memory.dmp

Filesize
1.0MB

Download
memory/4680-66-0x000001DAC3F50000-0x000001DAC7784000-memory.dmp

Filesize
56.2MB

Download