stealc | 364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683

Analysis

max time kernel
139s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07-05-2024 15:35

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General

Target

364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe
Size

408KB
MD5

a4dcfaa13e52e432fc8fdca623c6f01e
SHA1

a31d46c6989187943a2ff623c0ce40989dc22739
SHA256

364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683
SHA512

ef19c81dfbc921c4e2201f97b3e42895bad3a8783f92ed4d0a69b5e76729115e6b127591041cdd245e9f32db36f0955b12ee4ab1014ac53ab5560ad6aaa5b6bb
SSDEEP

6144:Et/Mq3iBOHmgiOSbXEX1Hj09wKU2mvAJgiBthwUl:LaRilbUX2jS2Bt2Ul

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
behavioral1/memory/1116-105-0x0000025B34D80000-0x0000025B385B4000-memory.dmp	family_zgrat_v1
behavioral1/memory/1116-107-0x0000025B52C80000-0x0000025B52D8A000-memory.dmp	family_zgrat_v1
behavioral1/memory/1116-111-0x0000025B3A330000-0x0000025B3A354000-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-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation	uz8.1.exe

Executes dropped EXE 2 IoCs

pid	Process
2172	uz8.0.exe
3192	uz8.1.exe

Loads dropped DLL 2 IoCs

pid	Process
2172	uz8.0.exe
2172	uz8.0.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
4980	1268	WerFault.exe	83
6072	2172	WerFault.exe	96

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	uz8.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	uz8.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	uz8.1.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	uz8.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	uz8.0.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
2172	uz8.0.exe
2172	uz8.0.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2172	uz8.0.exe
2172	uz8.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe
3192	uz8.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 2172	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	96
PID 1268 wrote to memory of 2172	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	96
PID 1268 wrote to memory of 2172	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	96
PID 1268 wrote to memory of 3192	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	98
PID 1268 wrote to memory of 3192	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	98
PID 1268 wrote to memory of 3192	1268	364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe	98
PID 3192 wrote to memory of 1116	3192	uz8.1.exe	104
PID 3192 wrote to memory of 1116	3192	uz8.1.exe	104

C:\Users\Admin\AppData\Local\Temp\364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe
"C:\Users\Admin\AppData\Local\Temp\364e800c0cf1962f36e41f8f1a5a1029decb25007c712277275729e299543683.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\uz8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\uz8.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2172
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 2352
    3⤵
    - Program crash
    PID:6072
- C:\Users\Admin\AppData\Local\Temp\uz8.1.exe
  "C:\Users\Admin\AppData\Local\Temp\uz8.1.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:3192
- - 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:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 1588
  2⤵
  - Program crash
  PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1268 -ip 1268
1⤵
PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2172 -ip 2172
1⤵
PID:3240

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
b56c0ed82cb3f04dd4586c361e8e2d41

SHA1
318fb8488da1da353164bb52bc81d1ca86b17652

SHA256
205b5d4d24a39739700e1a4384971e86bdf1ba2eed94c93d77747a962e969565

SHA512
20c71a2c43e1970eba99ad1ee949e875c1ff2cb4532885661a7cc8d19fec554f40aa4dbc13a81495e97491229fa4207624941e9aa9877d748718087d83ff90f6

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

Filesize
3KB

MD5
dbb2c6e5ca307b70d6e3d6222195a582

SHA1
8961d16156418aba7d03a241efbab6c6df8c4c49

SHA256
3dcfbcada0944d973a6979d146f13a202178800d596f56e0b90bce7ac9c261a9

SHA512
e5c10f32dc69e8b39c9814c56e59c291b781bd794e41fac00e315a3f3b9c6868437afee62a9d07a7a74c32ddc43e2e566749293f425348569e24a86c147a6240

Download Submit
C:\Users\Admin\AppData\Local\Temp\uz8.0.exe

Filesize
266KB

MD5
6bab6de801426725e2bfb5fe5e618be3

SHA1
a95566e6494f403bee7ba8f87740afb7b2390a71

SHA256
ecaa6655bef1c90bf1fa78e326b9df7561a7df156315f1ce1abef710ea925104

SHA512
6e9940f12e2bca37d3df5e35627a013a42229a5a91c6393a712f955e3450b0edd4dbb161c43b61905a0e16e778d91a5880d9e2e65958c09b77252e117c6cb101

Download Submit
C:\Users\Admin\AppData\Local\Temp\uz8.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1116-128-0x0000025B586E0000-0x0000025B58742000-memory.dmp

Filesize
392KB

Download
memory/1116-117-0x0000025B389E0000-0x0000025B389EA000-memory.dmp

Filesize
40KB

Download
memory/1116-135-0x0000025B53510000-0x0000025B5352E000-memory.dmp

Filesize
120KB

Download
memory/1116-134-0x0000025B58550000-0x0000025B585C6000-memory.dmp

Filesize
472KB

Download
memory/1116-133-0x0000025B58440000-0x0000025B5844C000-memory.dmp

Filesize
48KB

Download
memory/1116-130-0x0000025B58C70000-0x0000025B59198000-memory.dmp

Filesize
5.2MB

Download
memory/1116-129-0x0000025B58460000-0x0000025B58482000-memory.dmp

Filesize
136KB

Download
memory/1116-105-0x0000025B34D80000-0x0000025B385B4000-memory.dmp

Filesize
56.2MB

Download
memory/1116-127-0x0000025B58430000-0x0000025B5843A000-memory.dmp

Filesize
40KB

Download
memory/1116-107-0x0000025B52C80000-0x0000025B52D8A000-memory.dmp

Filesize
1.0MB

Download
memory/1116-108-0x0000025B3A2E0000-0x0000025B3A2F0000-memory.dmp

Filesize
64KB

Download
memory/1116-109-0x0000025B3A300000-0x0000025B3A30C000-memory.dmp

Filesize
48KB

Download
memory/1116-110-0x0000025B3A2F0000-0x0000025B3A304000-memory.dmp

Filesize
80KB

Download
memory/1116-111-0x0000025B3A330000-0x0000025B3A354000-memory.dmp

Filesize
144KB

Download
memory/1116-112-0x0000025B389D0000-0x0000025B389DA000-memory.dmp

Filesize
40KB

Download
memory/1116-113-0x0000025B52DF0000-0x0000025B52E1A000-memory.dmp

Filesize
168KB

Download
memory/1116-114-0x0000025B53070000-0x0000025B53122000-memory.dmp

Filesize
712KB

Download
memory/1116-115-0x0000025B53170000-0x0000025B531C0000-memory.dmp

Filesize
320KB

Download
memory/1116-116-0x0000025B531C0000-0x0000025B531E2000-memory.dmp

Filesize
136KB

Download
memory/1116-126-0x0000025B57550000-0x0000025B57558000-memory.dmp

Filesize
32KB

Download
memory/1116-121-0x0000025B531F0000-0x0000025B534F0000-memory.dmp

Filesize
3.0MB

Download
memory/1116-123-0x0000025B57260000-0x0000025B57268000-memory.dmp

Filesize
32KB

Download
memory/1116-124-0x0000025B57560000-0x0000025B57598000-memory.dmp

Filesize
224KB

Download
memory/1116-125-0x0000025B57530000-0x0000025B5753E000-memory.dmp

Filesize
56KB

Download
memory/1268-2-0x0000000002EA0000-0x0000000002F0C000-memory.dmp

Filesize
432KB

Download
memory/1268-1-0x0000000002B70000-0x0000000002C70000-memory.dmp

Filesize
1024KB

Download
memory/1268-29-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1268-28-0x0000000000400000-0x0000000002B23000-memory.dmp

Filesize
39.1MB

Download
memory/1268-13-0x0000000000400000-0x0000000002B23000-memory.dmp

Filesize
39.1MB

Download
memory/1268-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2172-106-0x0000000000400000-0x0000000002AFF000-memory.dmp

Filesize
39.0MB

Download
memory/2172-43-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2172-34-0x0000000000400000-0x0000000002AFF000-memory.dmp

Filesize
39.0MB

Download
memory/2172-175-0x0000000000400000-0x0000000002AFF000-memory.dmp

Filesize
39.0MB

Download
memory/2172-177-0x0000000000400000-0x0000000002AFF000-memory.dmp

Filesize
39.0MB

Download
memory/3192-104-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3192-92-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download