stealc | 97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e

Analysis

max time kernel
140s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
06-05-2024 14:17

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General

Target

97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe
Size

416KB
MD5

3517d1ac47167fcc3afbdb4a21a9fcb9
SHA1

5633d62cd097e5a15b12d98dff9939a418895edc
SHA256

97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e
SHA512

295cae5dfdbefd058f27ce0a52cec6051898db7636940e4a00e06b74503f4d7f2953c0893d5ad960ca005581f9d170df6fba6fd112f4c1e1a626b4910f42c3d3
SSDEEP

6144:xNDSLZK+bH6tSYLDidexnCihNJnrWXy1JFIHbP3ShohW90K:LSLZKK/dCCibRz4PiLaK

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/2268-144-0x00000285BD9E0000-0x00000285C12D8000-memory.dmp	family_zgrat_v1
behavioral2/memory/2268-145-0x00000285DCAD0000-0x00000285DCBE0000-memory.dmp	family_zgrat_v1
behavioral2/memory/2268-149-0x00000285C2F70000-0x00000285C2F94000-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	ulk.1.exe

Executes dropped EXE 2 IoCs

pid	Process
3300	ulk.0.exe
4288	ulk.1.exe

Loads dropped DLL 2 IoCs

pid	Process
3300	ulk.0.exe
3300	ulk.0.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
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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
400	776	WerFault.exe	82
4564	3300	WerFault.exe	93

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

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
3300	ulk.0.exe
3300	ulk.0.exe
3300	ulk.0.exe
3300	ulk.0.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe
4288	ulk.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 3300	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	93
PID 776 wrote to memory of 3300	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	93
PID 776 wrote to memory of 3300	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	93
PID 776 wrote to memory of 4288	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	95
PID 776 wrote to memory of 4288	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	95
PID 776 wrote to memory of 4288	776	97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe	95
PID 4288 wrote to memory of 2268	4288	ulk.1.exe	102
PID 4288 wrote to memory of 2268	4288	ulk.1.exe	102

C:\Users\Admin\AppData\Local\Temp\97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe
"C:\Users\Admin\AppData\Local\Temp\97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:776
- C:\Users\Admin\AppData\Local\Temp\ulk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\ulk.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3300
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3300 -s 2344
    3⤵
    - Program crash
    PID:4564
- C:\Users\Admin\AppData\Local\Temp\ulk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\ulk.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:4288
- - 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:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 776 -s 1376
  2⤵
  - Program crash
  PID:400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 776 -ip 776
1⤵
PID:1596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3300 -ip 3300
1⤵
PID:4268

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:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
2KB

MD5
27703f7257163801db73334e6aa45271

SHA1
198d7361ea1d94b77edfdd7a653c3086ca64ada1

SHA256
16ce858609dd28f5dbd3e4a72be3b1cc86a92d9230cec7255445fa29a7ecaee3

SHA512
8edfa8d568b17070a1dc7dc84250f76a311da7a578136b5e7f340bb1cf2d214227b638048d13641d5af6168ad78a30add776fb21931313302f2c45f21ad62c8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
3KB

MD5
a2f38b8836f7dee284588cf99232abc4

SHA1
7b3007d7d1aa2681d4349755e76c53acf894c807

SHA256
c057533ec4422ee9f11c1ef3bbc110fb1c2e21bed460f503fbaa6d7d934b9c5c

SHA512
36b8dba2a81754a39e1889f654ed909168829de7c1f0da21e4ff2d2f244bd7e95903e33dc294610003bb32db750fff4d450d5fb562878ac4806b0e583ab9e4db

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

Filesize
274KB

MD5
b63651242fe0e7f1fec1bde74aa9a314

SHA1
207fa50fec5ad58497fe74ab1025fa5581aa7bba

SHA256
bab90c5ac83470d55766cdbd3dffb8f4f4531d7b3fdf49dd5e318def2697c44c

SHA512
05df1e4d9d9a42efa9638eb92d37dc37c30c6cf9abf89ca97c46cbab0ea2de87c9d3723561dbf33e6832dd69774ccc16405ac121c9450e5f82db5d73863e335f

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/776-4-0x0000000000400000-0x0000000002B25000-memory.dmp

Filesize
39.1MB

Download
memory/776-1-0x0000000002DF0000-0x0000000002EF0000-memory.dmp

Filesize
1024KB

Download
memory/776-65-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/776-64-0x0000000002D00000-0x0000000002D6C000-memory.dmp

Filesize
432KB

Download
memory/776-63-0x0000000000400000-0x0000000002B25000-memory.dmp

Filesize
39.1MB

Download
memory/776-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/776-2-0x0000000002D00000-0x0000000002D6C000-memory.dmp

Filesize
432KB

Download
memory/2268-148-0x00000285C2F50000-0x00000285C2F64000-memory.dmp

Filesize
80KB

Download
memory/2268-164-0x00000285DCE70000-0x00000285DCE7E000-memory.dmp

Filesize
56KB

Download
memory/2268-173-0x00000285E20E0000-0x00000285E20FE000-memory.dmp

Filesize
120KB

Download
memory/2268-172-0x00000285E2150000-0x00000285E2172000-memory.dmp

Filesize
136KB

Download
memory/2268-170-0x00000285E2100000-0x00000285E2150000-memory.dmp

Filesize
320KB

Download
memory/2268-171-0x00000285E1260000-0x00000285E126C000-memory.dmp

Filesize
48KB

Download
memory/2268-144-0x00000285BD9E0000-0x00000285C12D8000-memory.dmp

Filesize
57.0MB

Download
memory/2268-145-0x00000285DCAD0000-0x00000285DCBE0000-memory.dmp

Filesize
1.1MB

Download
memory/2268-167-0x00000285E2880000-0x00000285E2DA8000-memory.dmp

Filesize
5.2MB

Download
memory/2268-147-0x00000285C2F60000-0x00000285C2F6C000-memory.dmp

Filesize
48KB

Download
memory/2268-149-0x00000285C2F70000-0x00000285C2F94000-memory.dmp

Filesize
144KB

Download
memory/2268-146-0x00000285C2F40000-0x00000285C2F50000-memory.dmp

Filesize
64KB

Download
memory/2268-150-0x00000285C2F90000-0x00000285C2F9A000-memory.dmp

Filesize
40KB

Download
memory/2268-151-0x00000285C3000000-0x00000285C302A000-memory.dmp

Filesize
168KB

Download
memory/2268-153-0x00000285DCD20000-0x00000285DCD9A000-memory.dmp

Filesize
488KB

Download
memory/2268-152-0x00000285DC8E0000-0x00000285DC992000-memory.dmp

Filesize
712KB

Download
memory/2268-154-0x00000285DCDA0000-0x00000285DCE02000-memory.dmp

Filesize
392KB

Download
memory/2268-155-0x00000285DCE80000-0x00000285DCEF6000-memory.dmp

Filesize
472KB

Download
memory/2268-156-0x00000285C2FF0000-0x00000285C2FFA000-memory.dmp

Filesize
40KB

Download
memory/2268-160-0x00000285DCF00000-0x00000285DD200000-memory.dmp

Filesize
3.0MB

Download
memory/2268-162-0x00000285DCE50000-0x00000285DCE58000-memory.dmp

Filesize
32KB

Download
memory/2268-163-0x00000285E11E0000-0x00000285E1218000-memory.dmp

Filesize
224KB

Download
memory/2268-166-0x00000285E2330000-0x00000285E2352000-memory.dmp

Filesize
136KB

Download
memory/2268-165-0x00000285E1250000-0x00000285E125A000-memory.dmp

Filesize
40KB

Download
memory/3300-26-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3300-14-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/3300-15-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/3300-130-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/4288-143-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4288-132-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download