stealc | 9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
09-05-2024 10:06

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General

Target

9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe
Size

382KB
MD5

d3b03da8cc7dcf4d1382156cb005a36e
SHA1

b9a8fd0151345adadd318b688295e267a55284ab
SHA256

9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8
SHA512

64733d56c806a3b94b569eeb12fc709477f87b0c75a1255d1c559dc7495642f4a365615e40275d50d861b7c8c7ab180c0173ab5eedbd9709fb43a56d5e1e1a53
SSDEEP

6144:L0NTKE3CDWHhQgoFZHaJtrzQr792AiXQvdUodm7iKMceJK2q:L0NGMCaXoFdAFzQrJviXq3w7IJK2q

Score

10^/10

stealc zgrat discovery rat spyware 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/2512-79-0x0000023FC5BF0000-0x0000023FC9424000-memory.dmp	family_zgrat_v1
behavioral2/memory/2512-80-0x0000023FE3D90000-0x0000023FE3E9A000-memory.dmp	family_zgrat_v1
behavioral2/memory/2512-84-0x0000023FE3A70000-0x0000023FE3A94000-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

Executes dropped EXE 2 IoCs

pid	Process
4072	u2q0.0.exe
3020	u2q0.1.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
132	3528	WerFault.exe	78
4580	4072	WerFault.exe	81

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	u2q0.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2q0.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2q0.1.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	u2q0.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2q0.0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3720	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4072	u2q0.0.exe
4072	u2q0.0.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe
3020	u2q0.1.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3528 wrote to memory of 4072	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	81
PID 3528 wrote to memory of 4072	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	81
PID 3528 wrote to memory of 4072	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	81
PID 3528 wrote to memory of 3020	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	84
PID 3528 wrote to memory of 3020	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	84
PID 3528 wrote to memory of 3020	3528	9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe	84
PID 3020 wrote to memory of 2512	3020	u2q0.1.exe	89
PID 3020 wrote to memory of 2512	3020	u2q0.1.exe	89
PID 4072 wrote to memory of 1136	4072	u2q0.0.exe	91
PID 4072 wrote to memory of 1136	4072	u2q0.0.exe	91
PID 4072 wrote to memory of 1136	4072	u2q0.0.exe	91

C:\Users\Admin\AppData\Local\Temp\9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe
"C:\Users\Admin\AppData\Local\Temp\9742004629e0fd88ab25a197674ff01f6553feb8781adc7549f2b16a3eb704d8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\AppData\Local\Temp\u2q0.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2q0.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4072
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\u2q0.0.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    PID:1136
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:3720
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 1376
    3⤵
    - Program crash
    PID:4580
- C:\Users\Admin\AppData\Local\Temp\u2q0.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2q0.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3020
- - 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:2512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3528 -s 976
  2⤵
  - Program crash
  PID:132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3528 -ip 3528
1⤵
PID:1816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4072 -ip 4072
1⤵
PID:4716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

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
efd4749f278f0c163488836a41d09174

SHA1
66a994902b80e18c11c72ebdf3a3ff2560401889

SHA256
985df158b218abc6d39ea11b2951db5e80d67690f90ad0d0d60d25238663189a

SHA512
ec68d236613425a26edcdd10836929acdce59e45ab4c8fde2325f484fe08cb10c4107a0fe4100924f227a9f42aaabd2dcff89582ee37d993fbbe10a6bae62646

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2q0.0.exe

Filesize
240KB

MD5
a5a396650cc1831759ee447062d4593a

SHA1
37bd8f9b348b16378ea9023489243b8725addf82

SHA256
a1f50375231c83613bd18aee62fdeccb52c06445d1eebf5fc7293246746f24a5

SHA512
a3063b2168164df6fd19cec76c7f07f30c4dae3fa5c00b7efb9c3005edbf564705701adbba575280373c916cf31e6450b246d6046de5ca384897d2751ffc2d4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2q0.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/2512-99-0x0000023FE8530000-0x0000023FE8538000-memory.dmp

Filesize
32KB

Download
memory/2512-101-0x0000023FE8ED0000-0x0000023FE8F32000-memory.dmp

Filesize
392KB

Download
memory/2512-111-0x0000023FE3BD0000-0x0000023FE3D83000-memory.dmp

Filesize
1.7MB

Download
memory/2512-85-0x0000023FE3AA0000-0x0000023FE3AAA000-memory.dmp

Filesize
40KB

Download
memory/2512-87-0x0000023FE4080000-0x0000023FE4132000-memory.dmp

Filesize
712KB

Download
memory/2512-107-0x0000023FE8D30000-0x0000023FE8DA6000-memory.dmp

Filesize
472KB

Download
memory/2512-106-0x0000023FE8C50000-0x0000023FE8C5C000-memory.dmp

Filesize
48KB

Download
memory/2512-103-0x0000023FE9460000-0x0000023FE9988000-memory.dmp

Filesize
5.2MB

Download
memory/2512-100-0x0000023FE8EB0000-0x0000023FE8EBA000-memory.dmp

Filesize
40KB

Download
memory/2512-102-0x0000023FE8C30000-0x0000023FE8C52000-memory.dmp

Filesize
136KB

Download
memory/2512-97-0x0000023FE8540000-0x0000023FE8578000-memory.dmp

Filesize
224KB

Download
memory/2512-79-0x0000023FC5BF0000-0x0000023FC9424000-memory.dmp

Filesize
56.2MB

Download
memory/2512-80-0x0000023FE3D90000-0x0000023FE3E9A000-memory.dmp

Filesize
1.0MB

Download
memory/2512-82-0x0000023FCB250000-0x0000023FCB25C000-memory.dmp

Filesize
48KB

Download
memory/2512-81-0x0000023FC9940000-0x0000023FC9950000-memory.dmp

Filesize
64KB

Download
memory/2512-83-0x0000023FCB240000-0x0000023FCB254000-memory.dmp

Filesize
80KB

Download
memory/2512-84-0x0000023FE3A70000-0x0000023FE3A94000-memory.dmp

Filesize
144KB

Download
memory/2512-86-0x0000023FE3EA0000-0x0000023FE3ECA000-memory.dmp

Filesize
168KB

Download
memory/2512-98-0x0000023FE8510000-0x0000023FE851E000-memory.dmp

Filesize
56KB

Download
memory/2512-109-0x0000023FE45F0000-0x0000023FE460E000-memory.dmp

Filesize
120KB

Download
memory/2512-89-0x0000023FE4130000-0x0000023FE4152000-memory.dmp

Filesize
136KB

Download
memory/2512-88-0x0000023FE4180000-0x0000023FE41D0000-memory.dmp

Filesize
320KB

Download
memory/2512-90-0x0000023FC9910000-0x0000023FC991A000-memory.dmp

Filesize
40KB

Download
memory/2512-94-0x0000023FE41D0000-0x0000023FE44D0000-memory.dmp

Filesize
3.0MB

Download
memory/2512-96-0x0000023FE8C00000-0x0000023FE8C08000-memory.dmp

Filesize
32KB

Download
memory/3020-78-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3020-75-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3528-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3528-1-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/3528-16-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/3528-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3528-31-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/3528-2-0x0000000004840000-0x00000000048AC000-memory.dmp

Filesize
432KB

Download
memory/4072-65-0x0000000000400000-0x0000000002AF9000-memory.dmp

Filesize
39.0MB

Download
memory/4072-57-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4072-37-0x0000000000400000-0x0000000002AF9000-memory.dmp

Filesize
39.0MB

Download
memory/4072-108-0x0000000000400000-0x0000000002AF9000-memory.dmp

Filesize
39.0MB

Download