stealc | d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce

Analysis

max time kernel
143s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 19:36

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General

Target

d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe
Size

447KB
MD5

845c733572bff2384461a65d0ebf13fc
SHA1

de15c85de5def4cf657844139f735b41af1e4860
SHA256

d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce
SHA512

a29a7703dd9cca6e66fb63a90a1b22a105c94cae60ae86f3d395336c8a78186fb82ac276429a2dc26df0b4116ecf6816c6948f2ab8c994e8beaebe3fca3e7cfd
SSDEEP

6144:vKk6Xa+m2GtA+0xmhmSstHcHytgYNeQKIusTOq/2l+4M0rDLY:CZKptAShmSst8HythNwsa4J4MoLY

Score

10^/10

stealc zgrat rat stealer

Malware Config

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/5080-68-0x00000211DB460000-0x00000211DED58000-memory.dmp	family_zgrat_v1
behavioral1/memory/5080-70-0x00000211FA580000-0x00000211FA690000-memory.dmp	family_zgrat_v1
behavioral1/memory/5080-74-0x00000211E0B60000-0x00000211E0B84000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	ujs.1.exe

Executes dropped EXE 2 IoCs

pid	Process
3456	ujs.0.exe
4596	ujs.1.exe

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
2756	3456	WerFault.exe	88
4620	712	WerFault.exe	82

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	ujs.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ujs.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ujs.1.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5080	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe
4596	ujs.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 3456	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	88
PID 712 wrote to memory of 3456	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	88
PID 712 wrote to memory of 3456	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	88
PID 712 wrote to memory of 4596	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	92
PID 712 wrote to memory of 4596	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	92
PID 712 wrote to memory of 4596	712	d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe	92
PID 4596 wrote to memory of 5080	4596	ujs.1.exe	97
PID 4596 wrote to memory of 5080	4596	ujs.1.exe	97

C:\Users\Admin\AppData\Local\Temp\d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe
"C:\Users\Admin\AppData\Local\Temp\d623ad69a3f4dc2ebd526d9abc1896c862b0d59a4e529ccf436e19501aec30ce.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:712
- C:\Users\Admin\AppData\Local\Temp\ujs.0.exe
  "C:\Users\Admin\AppData\Local\Temp\ujs.0.exe"
  2⤵
  - Executes dropped EXE
  PID:3456
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3456 -s 1240
    3⤵
    - Program crash
    PID:2756
- C:\Users\Admin\AppData\Local\Temp\ujs.1.exe
  "C:\Users\Admin\AppData\Local\Temp\ujs.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:4596
- - 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:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 712 -s 1160
  2⤵
  - Program crash
  PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3456 -ip 3456
1⤵
PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 712 -ip 712
1⤵
PID:4300

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\ujs.0.exe

Filesize
306KB

MD5
942f4c9696a776e6982bee3434d31345

SHA1
06ec5f2a44506b3bb4749cbeea3496647379306f

SHA256
1c610b04cd3adc13e35f85762a1167cd99b5a3072e6f6b0c823758da3847b357

SHA512
a213d68103ffb223705676329a6cf29ef3a0fae253304f67f74d58a8ae47d6659961b3a23ca50c8221abd9241e02d56f6f6d3aa23a1942af84e2d7bb7c2ed51b

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/712-2-0x00000000049D0000-0x0000000004A3C000-memory.dmp

Filesize
432KB

Download
memory/712-3-0x0000000000400000-0x0000000002D4E000-memory.dmp

Filesize
41.3MB

Download
memory/712-37-0x00000000049D0000-0x0000000004A3C000-memory.dmp

Filesize
432KB

Download
memory/712-36-0x0000000000400000-0x0000000002D4E000-memory.dmp

Filesize
41.3MB

Download
memory/712-1-0x0000000003030000-0x0000000003130000-memory.dmp

Filesize
1024KB

Download
memory/3456-15-0x0000000000400000-0x0000000002D2B000-memory.dmp

Filesize
41.2MB

Download
memory/3456-31-0x0000000000400000-0x0000000002D2B000-memory.dmp

Filesize
41.2MB

Download
memory/3456-14-0x0000000002EC0000-0x0000000002EE7000-memory.dmp

Filesize
156KB

Download
memory/3456-13-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

Filesize
1024KB

Download
memory/4596-26-0x00000000028D0000-0x00000000028D1000-memory.dmp

Filesize
4KB

Download
memory/4596-53-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4596-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4596-66-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/5080-74-0x00000211E0B60000-0x00000211E0B84000-memory.dmp

Filesize
144KB

Download
memory/5080-85-0x00000211FA980000-0x00000211FAC80000-memory.dmp

Filesize
3.0MB

Download
memory/5080-69-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download
memory/5080-70-0x00000211FA580000-0x00000211FA690000-memory.dmp

Filesize
1.1MB

Download
memory/5080-71-0x00000211DF320000-0x00000211DF330000-memory.dmp

Filesize
64KB

Download
memory/5080-72-0x00000211E09D0000-0x00000211E09DC000-memory.dmp

Filesize
48KB

Download
memory/5080-73-0x00000211E09C0000-0x00000211E09D4000-memory.dmp

Filesize
80KB

Download
memory/5080-67-0x00007FF89AE60000-0x00007FF89B921000-memory.dmp

Filesize
10.8MB

Download
memory/5080-75-0x00000211E0B80000-0x00000211E0B8A000-memory.dmp

Filesize
40KB

Download
memory/5080-76-0x00000211F9270000-0x00000211F929A000-memory.dmp

Filesize
168KB

Download
memory/5080-77-0x00000211FA7D0000-0x00000211FA882000-memory.dmp

Filesize
712KB

Download
memory/5080-78-0x00000211F92A0000-0x00000211F931A000-memory.dmp

Filesize
488KB

Download
memory/5080-79-0x00000211FA2A0000-0x00000211FA302000-memory.dmp

Filesize
392KB

Download
memory/5080-80-0x00000211FA900000-0x00000211FA976000-memory.dmp

Filesize
472KB

Download
memory/5080-81-0x00000211DF300000-0x00000211DF30A000-memory.dmp

Filesize
40KB

Download
memory/5080-68-0x00000211DB460000-0x00000211DED58000-memory.dmp

Filesize
57.0MB

Download
memory/5080-87-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download
memory/5080-88-0x00000211FA8C0000-0x00000211FA8C8000-memory.dmp

Filesize
32KB

Download
memory/5080-89-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download
memory/5080-90-0x00000211FEC30000-0x00000211FEC68000-memory.dmp

Filesize
224KB

Download
memory/5080-91-0x00000211FA8D0000-0x00000211FA8DE000-memory.dmp

Filesize
56KB

Download
memory/5080-92-0x0000021180D80000-0x0000021180D8A000-memory.dmp

Filesize
40KB

Download
memory/5080-93-0x0000021180D90000-0x0000021180DB2000-memory.dmp

Filesize
136KB

Download
memory/5080-94-0x00000211812E0000-0x0000021181808000-memory.dmp

Filesize
5.2MB

Download
memory/5080-97-0x00000211FF0F0000-0x00000211FF140000-memory.dmp

Filesize
320KB

Download
memory/5080-98-0x0000021180300000-0x000002118030C000-memory.dmp

Filesize
48KB

Download
memory/5080-99-0x00000211FACB0000-0x00000211FACD2000-memory.dmp

Filesize
136KB

Download
memory/5080-100-0x00007FF89AE60000-0x00007FF89B921000-memory.dmp

Filesize
10.8MB

Download
memory/5080-101-0x00000211FAC80000-0x00000211FAC9E000-memory.dmp

Filesize
120KB

Download
memory/5080-103-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download
memory/5080-104-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download
memory/5080-105-0x00000211FA310000-0x00000211FA320000-memory.dmp

Filesize
64KB

Download