stealc | fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083

Analysis

max time kernel
136s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 04:48

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General

Target

fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
Size

415KB
MD5

2c418334727e8fc2b5cfbd75f5d279ec
SHA1

554e3b34a4d09d61da5bb35fb50638cb74c4dc32
SHA256

fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083
SHA512

c21dd93e0b032d5daa1615f19e429adfc056b2a90b3358c36b0f614a1dd8dfa7e09d722c49bffa71227d3f4ce5b9802212bc41db219e90176087ef573d285af6
SSDEEP

6144:P50SXOdGHuDgJrhcqwNlpOE7oXLp3FkOfU49bCs7LrkA1:qSXOdvDIXY7O9X13FknszkA1

Score

10^/10

stealc zgrat discovery rat 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/4708-65-0x000002CA8DC70000-0x000002CA914A4000-memory.dmp	family_zgrat_v1
behavioral2/memory/4708-66-0x000002CAABDB0000-0x000002CAABEBA000-memory.dmp	family_zgrat_v1
behavioral2/memory/4708-70-0x000002CA93150000-0x000002CA93174000-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

Detects encrypted or obfuscated .NET executables 1 IoCs

resource	yara_rule
behavioral2/memory/4708-65-0x000002CA8DC70000-0x000002CA914A4000-memory.dmp	INDICATOR_EXE_DotNET_Encrypted

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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
Key value queried	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	uoc.1.exe

Executes dropped EXE 2 IoCs

pid	Process
4948	uoc.0.exe
4332	uoc.1.exe

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
2064	876	WerFault.exe	84
1472	4948	WerFault.exe	88

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

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4948	uoc.0.exe
4948	uoc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4708	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe
4332	uoc.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 4948	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	88
PID 876 wrote to memory of 4948	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	88
PID 876 wrote to memory of 4948	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	88
PID 876 wrote to memory of 4332	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	92
PID 876 wrote to memory of 4332	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	92
PID 876 wrote to memory of 4332	876	fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe	92
PID 4332 wrote to memory of 4708	4332	uoc.1.exe	105
PID 4332 wrote to memory of 4708	4332	uoc.1.exe	105

C:\Users\Admin\AppData\Local\Temp\fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe
"C:\Users\Admin\AppData\Local\Temp\fd3f7db725c6d215bf5e5599363f6c1aad5cf5204a4bee691e00db4fe95bf083.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:876
- C:\Users\Admin\AppData\Local\Temp\uoc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\uoc.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4948
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 1316
    3⤵
    - Program crash
    PID:1472
- C:\Users\Admin\AppData\Local\Temp\uoc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\uoc.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:4332
- - 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:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 988
  2⤵
  - Program crash
  PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 876 -ip 876
1⤵
PID:3396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4948 -ip 4948
1⤵
PID:2532

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\iolo\dm\ioloDMLog.txt

Filesize
3KB

MD5
f8e295d2655813915eb74195f1ba66de

SHA1
21631d656f4f63255592a15113a50e09cd91878f

SHA256
40cb4208092f326b1c18ffbc7d95030fbc0971de7533aa241b41e83dbdc348c7

SHA512
6a5356bf131287da7a6e62533488b0d2c4d1bf7ed033e2a26c606b77583b3253df1c43c2d424b832ae3d32008178b8f2582e3bcf7ed29a81a9eb60093a39c644

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

Filesize
225KB

MD5
defa7c78ede3a0e93381126de0234328

SHA1
90fbdb299db7e54ed706f20821846622a124e6ff

SHA256
1eb49064f0f461813a0e86abb774d7664272f295a21ca0b5847dcfcf91926a24

SHA512
dfd2ca5e8f403ca0668c7c3e8d34367dec0247a77442906ca265acfa7c08496b81d911a7c9c280b5baab05c7b79d3566dd26912501026f9da26a73354a4a9fc8

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/876-2-0x0000000003660000-0x00000000036CC000-memory.dmp

Filesize
432KB

Download
memory/876-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/876-1-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

Filesize
1024KB

Download
memory/876-31-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/876-30-0x0000000000400000-0x0000000001A32000-memory.dmp

Filesize
22.2MB

Download
memory/4332-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4332-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4708-72-0x000002CAABBF0000-0x000002CAABC1A000-memory.dmp

Filesize
168KB

Download
memory/4708-80-0x000002CAAC100000-0x000002CAAC400000-memory.dmp

Filesize
3.0MB

Download
memory/4708-95-0x000002CAB1680000-0x000002CAB169E000-memory.dmp

Filesize
120KB

Download
memory/4708-65-0x000002CA8DC70000-0x000002CA914A4000-memory.dmp

Filesize
56.2MB

Download
memory/4708-66-0x000002CAABDB0000-0x000002CAABEBA000-memory.dmp

Filesize
1.0MB

Download
memory/4708-67-0x000002CA918A0000-0x000002CA918B0000-memory.dmp

Filesize
64KB

Download
memory/4708-68-0x000002CA93120000-0x000002CA9312C000-memory.dmp

Filesize
48KB

Download
memory/4708-69-0x000002CA918B0000-0x000002CA918C4000-memory.dmp

Filesize
80KB

Download
memory/4708-70-0x000002CA93150000-0x000002CA93174000-memory.dmp

Filesize
144KB

Download
memory/4708-71-0x000002CAABBA0000-0x000002CAABBAA000-memory.dmp

Filesize
40KB

Download
memory/4708-94-0x000002CAB1720000-0x000002CAB1796000-memory.dmp

Filesize
472KB

Download
memory/4708-73-0x000002CAAC000000-0x000002CAAC0B2000-memory.dmp

Filesize
712KB

Download
memory/4708-74-0x000002CAAC0B0000-0x000002CAAC100000-memory.dmp

Filesize
320KB

Download
memory/4708-75-0x000002CAABC50000-0x000002CAABC72000-memory.dmp

Filesize
136KB

Download
memory/4708-76-0x000002CAABBB0000-0x000002CAABBBA000-memory.dmp

Filesize
40KB

Download
memory/4708-92-0x000002CAB1340000-0x000002CAB134C000-memory.dmp

Filesize
48KB

Download
memory/4708-82-0x000002CAB0B00000-0x000002CAB0B08000-memory.dmp

Filesize
32KB

Download
memory/4708-83-0x000002CAB0440000-0x000002CAB0478000-memory.dmp

Filesize
224KB

Download
memory/4708-84-0x000002CAB0410000-0x000002CAB041E000-memory.dmp

Filesize
56KB

Download
memory/4708-85-0x000002CAB0430000-0x000002CAB0438000-memory.dmp

Filesize
32KB

Download
memory/4708-86-0x000002CAB1320000-0x000002CAB132A000-memory.dmp

Filesize
40KB

Download
memory/4708-87-0x000002CAB15D0000-0x000002CAB1632000-memory.dmp

Filesize
392KB

Download
memory/4708-88-0x000002CAB1630000-0x000002CAB1652000-memory.dmp

Filesize
136KB

Download
memory/4708-89-0x000002CAB1B80000-0x000002CAB20A8000-memory.dmp

Filesize
5.2MB

Download
memory/4948-15-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-97-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-99-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-101-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/4948-103-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download