stealc | b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7

Analysis

max time kernel
194s
max time network
255s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
06-05-2024 05:40

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General

Target

b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe
Size

416KB
MD5

7b2875cb05e2096cdff530aa2b6fc6fc
SHA1

3db46544f57870426eaee8aa07bdd1e605c54b29
SHA256

b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7
SHA512

0e0208f81195b6e5c3c01e2bed1cf38fb9221b0c86190da4e77763880da21d1b5f81c142dfcf27ee6ba8d7ff3383d1417d466a28c5bdc2f13a0dd498f4928441
SSDEEP

6144:xNDSLZK+bH6tSYLDidexnCihNJnrWXy1JFIHbP3ShohW90F:LSLZKK/dCCibRz4PiLaF

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/196-113-0x000001E415340000-0x000001E418C38000-memory.dmp	family_zgrat_v1
behavioral2/memory/196-114-0x000001E4333F0000-0x000001E433500000-memory.dmp	family_zgrat_v1
behavioral2/memory/196-118-0x000001E4333B0000-0x000001E4333D4000-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
5000	u2fk.0.exe
3888	u2fk.1.exe

Loads dropped DLL 2 IoCs

pid	Process
5000	u2fk.0.exe
5000	u2fk.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

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	u2fk.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2fk.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2fk.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	u2fk.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2fk.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
5000	u2fk.0.exe
5000	u2fk.0.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5000	u2fk.0.exe
5000	u2fk.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	196	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe
3888	u2fk.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 5000	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	73
PID 3152 wrote to memory of 5000	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	73
PID 3152 wrote to memory of 5000	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	73
PID 3152 wrote to memory of 3888	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	75
PID 3152 wrote to memory of 3888	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	75
PID 3152 wrote to memory of 3888	3152	b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe	75
PID 3888 wrote to memory of 196	3888	u2fk.1.exe	77
PID 3888 wrote to memory of 196	3888	u2fk.1.exe	77

C:\Users\Admin\AppData\Local\Temp\b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe
"C:\Users\Admin\AppData\Local\Temp\b97edba2e0e81b4cc7d99a6776f80d50ce46952680c71b06428f6a3206c366f7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\u2fk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2fk.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:5000
- C:\Users\Admin\AppData\Local\Temp\u2fk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2fk.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3888
- - 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:196

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:\Users\Admin\AppData\Local\Temp\u2fk.0.exe

Filesize
275KB

MD5
31c1bdc2c9075e8c2eab9353c41c117f

SHA1
ab28fb009dc8c2fa244c773760109e38711b1025

SHA256
4e08b9b37494a1917d2ab809fff59b3a45673a80d25587e51c8749331bb56233

SHA512
78b995611e33b441e9ebaeecbbce3ec96bbfcac7f71bd0f639ab1e3394900be5c80893dfc8957b696609eca7ce1933d58f026c7be389795f0dcc72ad3fc35593

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2fk.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/196-131-0x000001E437B20000-0x000001E437B28000-memory.dmp

Filesize
32KB

Download
memory/196-134-0x000001E438CB0000-0x000001E438CD2000-memory.dmp

Filesize
136KB

Download
memory/196-141-0x000001E438D00000-0x000001E438D1E000-memory.dmp

Filesize
120KB

Download
memory/196-140-0x000001E438D70000-0x000001E438D92000-memory.dmp

Filesize
136KB

Download
memory/196-139-0x000001E438CD0000-0x000001E438CDC000-memory.dmp

Filesize
48KB

Download
memory/196-138-0x000001E438D20000-0x000001E438D70000-memory.dmp

Filesize
320KB

Download
memory/196-135-0x000001E439210000-0x000001E439736000-memory.dmp

Filesize
5.1MB

Download
memory/196-133-0x000001E438CA0000-0x000001E438CAA000-memory.dmp

Filesize
40KB

Download
memory/196-132-0x000001E437BA0000-0x000001E437BD8000-memory.dmp

Filesize
224KB

Download
memory/196-129-0x000001E433A00000-0x000001E433D00000-memory.dmp

Filesize
3.0MB

Download
memory/196-125-0x000001E433230000-0x000001E43323A000-memory.dmp

Filesize
40KB

Download
memory/196-113-0x000001E415340000-0x000001E418C38000-memory.dmp

Filesize
57.0MB

Download
memory/196-114-0x000001E4333F0000-0x000001E433500000-memory.dmp

Filesize
1.1MB

Download
memory/196-116-0x000001E433350000-0x000001E43335C000-memory.dmp

Filesize
48KB

Download
memory/196-115-0x000001E41A7E0000-0x000001E41A7F0000-memory.dmp

Filesize
64KB

Download
memory/196-117-0x000001E41A8C0000-0x000001E41A8D4000-memory.dmp

Filesize
80KB

Download
memory/196-118-0x000001E4333B0000-0x000001E4333D4000-memory.dmp

Filesize
144KB

Download
memory/196-121-0x000001E4337E0000-0x000001E43380A000-memory.dmp

Filesize
168KB

Download
memory/196-120-0x000001E433730000-0x000001E4337E2000-memory.dmp

Filesize
712KB

Download
memory/196-119-0x000001E433220000-0x000001E43322A000-memory.dmp

Filesize
40KB

Download
memory/196-122-0x000001E433810000-0x000001E43388A000-memory.dmp

Filesize
488KB

Download
memory/196-123-0x000001E4338A0000-0x000001E433902000-memory.dmp

Filesize
392KB

Download
memory/196-124-0x000001E433980000-0x000001E4339F6000-memory.dmp

Filesize
472KB

Download
memory/3152-32-0x0000000000400000-0x0000000002B25000-memory.dmp

Filesize
39.1MB

Download
memory/3152-1-0x0000000002D10000-0x0000000002E10000-memory.dmp

Filesize
1024KB

Download
memory/3152-2-0x00000000047B0000-0x000000000481C000-memory.dmp

Filesize
432KB

Download
memory/3152-43-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3152-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3152-42-0x00000000047B0000-0x000000000481C000-memory.dmp

Filesize
432KB

Download
memory/3888-93-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3888-112-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/5000-10-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/5000-15-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/5000-11-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/5000-143-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/5000-92-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/5000-150-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/5000-152-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download