stealc | 6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779

Analysis

max time kernel
141s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 19:16

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General

Target

6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe
Size

364KB
MD5

316070e5734654bcb72f94dcbb571964
SHA1

1e250a184d4950a4b6d5de59a021b5707228029c
SHA256

6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779
SHA512

262a573395641f5c108b157859e6f84e47f06abc3b9c9b2aa36e0406919cceed1147b6517e843160b04f05c9807719c1993b074f74f7021698dcfeeebed9d0ac
SSDEEP

6144:US0t5FW7l8UYZb1jNb41/6vpo+kveaeldhFeyf8rSYMOLcPZuBkT7YKkUT3fgP:US0nY7+5ao6DmlLhFerrSYMOEZuBkPTa

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/932-67-0x0000023093140000-0x0000023096974000-memory.dmp	family_zgrat_v1
behavioral1/memory/932-72-0x00000230B1ED0000-0x00000230B1EF4000-memory.dmp	family_zgrat_v1
behavioral1/memory/932-68-0x00000230B2050000-0x00000230B215A000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	u12o.1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe

Executes dropped EXE 2 IoCs

pid	Process
4452	u12o.0.exe
1752	u12o.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
2848	1392	WerFault.exe	82
1144	4452	WerFault.exe	86

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	u12o.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u12o.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u12o.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	u12o.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u12o.0.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4452	u12o.0.exe
4452	u12o.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	932	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe
1752	u12o.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 4452	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	86
PID 1392 wrote to memory of 4452	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	86
PID 1392 wrote to memory of 4452	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	86
PID 1392 wrote to memory of 1752	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	90
PID 1392 wrote to memory of 1752	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	90
PID 1392 wrote to memory of 1752	1392	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	90
PID 1752 wrote to memory of 932	1752	u12o.1.exe	102
PID 1752 wrote to memory of 932	1752	u12o.1.exe	102

C:\Users\Admin\AppData\Local\Temp\6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe
"C:\Users\Admin\AppData\Local\Temp\6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Users\Admin\AppData\Local\Temp\u12o.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u12o.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4452
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4452 -s 1040
    3⤵
    - Program crash
    PID:1144
- C:\Users\Admin\AppData\Local\Temp\u12o.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u12o.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:1752
- - 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:932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 1636
  2⤵
  - Program crash
  PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1392 -ip 1392
1⤵
PID:1080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4452 -ip 4452
1⤵
PID:4696

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\u12o.0.exe

Filesize
223KB

MD5
eba29f456da60d82c13021441b3d7798

SHA1
d1a4fe3c8002d5be2393e5ae92892232d8e4a78e

SHA256
5edef454c9c9622255eb8616c5cb841f80cfe6cfc470f3ac2d46ca6ad0b64ff1

SHA512
f47e99c4926e261c134db7198b98abe138a79db12a88a6112fc34770a7cd01ad2c1cb1c4ca71bb5290d22ef4d8d17901583eb519633a823fdd94db1843e3461f

Download Submit
C:\Users\Admin\AppData\Local\Temp\u12o.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/932-88-0x00000230B78E0000-0x00000230B78EA000-memory.dmp

Filesize
40KB

Download
memory/932-67-0x0000023093140000-0x0000023096974000-memory.dmp

Filesize
56.2MB

Download
memory/932-77-0x00000230B23F0000-0x00000230B2412000-memory.dmp

Filesize
136KB

Download
memory/932-96-0x00000230B76C0000-0x00000230B76DE000-memory.dmp

Filesize
120KB

Download
memory/932-75-0x00000230B22A0000-0x00000230B2352000-memory.dmp

Filesize
712KB

Download
memory/932-85-0x00000230B6770000-0x00000230B67A8000-memory.dmp

Filesize
224KB

Download
memory/932-94-0x00000230B7680000-0x00000230B768C000-memory.dmp

Filesize
48KB

Download
memory/932-91-0x00000230B7E90000-0x00000230B83B8000-memory.dmp

Filesize
5.2MB

Download
memory/932-86-0x00000230B6740000-0x00000230B674E000-memory.dmp

Filesize
56KB

Download
memory/932-89-0x00000230B7900000-0x00000230B7962000-memory.dmp

Filesize
392KB

Download
memory/932-90-0x00000230B7660000-0x00000230B7682000-memory.dmp

Filesize
136KB

Download
memory/932-84-0x00000230B6E30000-0x00000230B6E38000-memory.dmp

Filesize
32KB

Download
memory/932-70-0x00000230B0F00000-0x00000230B0F0C000-memory.dmp

Filesize
48KB

Download
memory/932-74-0x00000230B1F00000-0x00000230B1F2A000-memory.dmp

Filesize
168KB

Download
memory/932-71-0x0000023098670000-0x0000023098684000-memory.dmp

Filesize
80KB

Download
memory/932-69-0x0000023098650000-0x0000023098660000-memory.dmp

Filesize
64KB

Download
memory/932-68-0x00000230B2050000-0x00000230B215A000-memory.dmp

Filesize
1.0MB

Download
memory/932-76-0x00000230B23A0000-0x00000230B23F0000-memory.dmp

Filesize
320KB

Download
memory/932-87-0x00000230B6760000-0x00000230B6768000-memory.dmp

Filesize
32KB

Download
memory/932-95-0x00000230B7760000-0x00000230B77D6000-memory.dmp

Filesize
472KB

Download
memory/932-72-0x00000230B1ED0000-0x00000230B1EF4000-memory.dmp

Filesize
144KB

Download
memory/932-73-0x00000230B0F10000-0x00000230B0F1A000-memory.dmp

Filesize
40KB

Download
memory/932-82-0x00000230B2420000-0x00000230B2720000-memory.dmp

Filesize
3.0MB

Download
memory/932-78-0x00000230B1EF0000-0x00000230B1EFA000-memory.dmp

Filesize
40KB

Download
memory/1392-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1392-35-0x00000000036A0000-0x000000000370C000-memory.dmp

Filesize
432KB

Download
memory/1392-2-0x00000000036A0000-0x000000000370C000-memory.dmp

Filesize
432KB

Download
memory/1392-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1392-1-0x0000000001D00000-0x0000000001E00000-memory.dmp

Filesize
1024KB

Download
memory/1392-34-0x0000000000400000-0x0000000001A25000-memory.dmp

Filesize
22.1MB

Download
memory/1752-53-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1752-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4452-103-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-15-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-14-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-98-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-101-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-13-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/4452-105-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download