stealc | 9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521

Analysis

max time kernel
124s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 13:01

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General

Target

9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe
Size

412KB
MD5

0897f8698557905b5b54c894ebca85d2
SHA1

3313116f4ba3ca5dd041fcd6ce85904ae6cf05ee
SHA256

9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521
SHA512

01754a05532206551124f3261dcbfd973d16b13e38bb134d12c2a32fa6a5e96b77ee0c1e88b35599a51e60a27edde34ad7f52c35307a865068ec896b0fb9827e
SSDEEP

6144:AGlcL+o09CVHclUl3t/1aXwTY9nWK7gjnoF3ovTw4Ce7B/9ryFV:AGlcqoCCtclDXwTY9nSo1oLCe9BoV

Score

10^/10

stealc zgrat rat stealer

Malware Config

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/5096-67-0x000001BF53080000-0x000001BF56978000-memory.dmp	family_zgrat_v1
behavioral1/memory/5096-69-0x000001BF72190000-0x000001BF722A0000-memory.dmp	family_zgrat_v1
behavioral1/memory/5096-73-0x000001BF58660000-0x000001BF58684000-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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	u3x8.1.exe

Executes dropped EXE 2 IoCs

pid	Process
2140	u3x8.0.exe
408	u3x8.1.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
3116	2140	WerFault.exe	89
3148	5084	WerFault.exe	84

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	u3x8.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3x8.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3x8.1.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5096	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe
408	u3x8.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5084 wrote to memory of 2140	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	89
PID 5084 wrote to memory of 2140	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	89
PID 5084 wrote to memory of 2140	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	89
PID 5084 wrote to memory of 408	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	94
PID 5084 wrote to memory of 408	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	94
PID 5084 wrote to memory of 408	5084	9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe	94
PID 408 wrote to memory of 5096	408	u3x8.1.exe	98
PID 408 wrote to memory of 5096	408	u3x8.1.exe	98

C:\Users\Admin\AppData\Local\Temp\9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe
"C:\Users\Admin\AppData\Local\Temp\9994d8f1944becbe2d7d359d30149bbe3241a9f15eed6c9572746fad4f524521.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Users\Admin\AppData\Local\Temp\u3x8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u3x8.0.exe"
  2⤵
  - Executes dropped EXE
  PID:2140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1284
    3⤵
    - Program crash
    PID:3116
- C:\Users\Admin\AppData\Local\Temp\u3x8.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u3x8.1.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:408
- - 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:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 1152
  2⤵
  - Program crash
  PID:3148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2140 -ip 2140
1⤵
PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5084 -ip 5084
1⤵
PID:3684

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\u3x8.0.exe

Filesize
270KB

MD5
d330b116b44e4cba0402d391a6c0f58e

SHA1
d5b0fb545d5d935ad7b8c052bec0db5f64653431

SHA256
3a904984d144938fa118e38de60e0c740bae53985013a4c722ad2221a45dcdd6

SHA512
7402ad47ac0b4517e9d135c886d6ab1205146199caad39a74472f756a80a4427c1686475f316d1035cc77df7bc66c581c8bab39a8fb6dfa12d9b5dbba6ab1aa8

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3x8.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/408-27-0x00000000027A0000-0x00000000027A1000-memory.dmp

Filesize
4KB

Download
memory/408-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/408-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2140-13-0x0000000002C70000-0x0000000002D70000-memory.dmp

Filesize
1024KB

Download
memory/2140-14-0x0000000002EB0000-0x0000000002ED7000-memory.dmp

Filesize
156KB

Download
memory/2140-15-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/2140-24-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/5084-3-0x0000000000400000-0x0000000002C4A000-memory.dmp

Filesize
40.3MB

Download
memory/5084-2-0x0000000004A30000-0x0000000004A9D000-memory.dmp

Filesize
436KB

Download
memory/5084-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/5084-32-0x0000000000400000-0x0000000002C4A000-memory.dmp

Filesize
40.3MB

Download
memory/5084-33-0x0000000004A30000-0x0000000004A9D000-memory.dmp

Filesize
436KB

Download
memory/5096-74-0x000001BF58680000-0x000001BF5868A000-memory.dmp

Filesize
40KB

Download
memory/5096-87-0x000001BF76F10000-0x000001BF76F18000-memory.dmp

Filesize
32KB

Download
memory/5096-68-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-69-0x000001BF72190000-0x000001BF722A0000-memory.dmp

Filesize
1.1MB

Download
memory/5096-70-0x000001BF56DA0000-0x000001BF56DB0000-memory.dmp

Filesize
64KB

Download
memory/5096-71-0x000001BF58600000-0x000001BF5860C000-memory.dmp

Filesize
48KB

Download
memory/5096-72-0x000001BF585F0000-0x000001BF58604000-memory.dmp

Filesize
80KB

Download
memory/5096-73-0x000001BF58660000-0x000001BF58684000-memory.dmp

Filesize
144KB

Download
memory/5096-66-0x00007FFA7FFC0000-0x00007FFA80A81000-memory.dmp

Filesize
10.8MB

Download
memory/5096-76-0x000001BF71F30000-0x000001BF71FE2000-memory.dmp

Filesize
712KB

Download
memory/5096-75-0x000001BF70F80000-0x000001BF70FAA000-memory.dmp

Filesize
168KB

Download
memory/5096-77-0x000001BF723E0000-0x000001BF7245A000-memory.dmp

Filesize
488KB

Download
memory/5096-78-0x000001BF72110000-0x000001BF72172000-memory.dmp

Filesize
392KB

Download
memory/5096-79-0x000001BF724E0000-0x000001BF72556000-memory.dmp

Filesize
472KB

Download
memory/5096-80-0x000001BF58690000-0x000001BF5869A000-memory.dmp

Filesize
40KB

Download
memory/5096-84-0x000001BF72560000-0x000001BF72860000-memory.dmp

Filesize
3.0MB

Download
memory/5096-86-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-67-0x000001BF53080000-0x000001BF56978000-memory.dmp

Filesize
57.0MB

Download
memory/5096-88-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-89-0x000001BF76850000-0x000001BF76888000-memory.dmp

Filesize
224KB

Download
memory/5096-90-0x000001BF76820000-0x000001BF7682E000-memory.dmp

Filesize
56KB

Download
memory/5096-91-0x000001BF779B0000-0x000001BF779BA000-memory.dmp

Filesize
40KB

Download
memory/5096-92-0x000001BF77730000-0x000001BF77752000-memory.dmp

Filesize
136KB

Download
memory/5096-93-0x000001BF77EF0000-0x000001BF78418000-memory.dmp

Filesize
5.2MB

Download
memory/5096-96-0x000001BF777A0000-0x000001BF777F0000-memory.dmp

Filesize
320KB

Download
memory/5096-97-0x000001BF77750000-0x000001BF7775C000-memory.dmp

Filesize
48KB

Download
memory/5096-98-0x000001BF777F0000-0x000001BF77812000-memory.dmp

Filesize
136KB

Download
memory/5096-99-0x000001BF77820000-0x000001BF7783E000-memory.dmp

Filesize
120KB

Download
memory/5096-101-0x00007FFA7FFC0000-0x00007FFA80A81000-memory.dmp

Filesize
10.8MB

Download
memory/5096-102-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-103-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-104-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download
memory/5096-105-0x000001BF72000000-0x000001BF72010000-memory.dmp

Filesize
64KB

Download