stealc | 6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 19:34

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General

Target

6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe
Size

384KB
MD5

94717be21e4d4d18fe3f51fa48de7d60
SHA1

4d2e5a3d275f44583544a4ccce229f39857d45d6
SHA256

6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69
SHA512

6fdbc21cb22171ce851c2b90be292ec1a43ac691b56fc850cad9488d918e434ae09574b1b707617023f1305eaab5db6cfbb5160639e357848a71ce808c3a8253
SSDEEP

6144:2nNm4Za4Cv1GOuLzYI0dBXV9TCS/lMEGFZCTiQJ0s1:2nNNZg1GOuL5SV9TNyEGFTQP1

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
behavioral1/memory/1648-68-0x0000026DE32C0000-0x0000026DE6AF4000-memory.dmp	family_zgrat_v1
behavioral1/memory/1648-69-0x0000026DEA890000-0x0000026DEA99A000-memory.dmp	family_zgrat_v1
behavioral1/memory/1648-73-0x0000026DEAA00000-0x0000026DEAA24000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	u1fk.1.exe

Executes dropped EXE 2 IoCs

pid	Process
940	u1fk.0.exe
2120	u1fk.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
1008	1856	WerFault.exe	81
1532	940	WerFault.exe	86

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	u1fk.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1fk.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1fk.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	u1fk.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1fk.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
940	u1fk.0.exe
940	u1fk.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe
2120	u1fk.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 940	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	86
PID 1856 wrote to memory of 940	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	86
PID 1856 wrote to memory of 940	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	86
PID 1856 wrote to memory of 2120	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	88
PID 1856 wrote to memory of 2120	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	88
PID 1856 wrote to memory of 2120	1856	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	88
PID 2120 wrote to memory of 1648	2120	u1fk.1.exe	97
PID 2120 wrote to memory of 1648	2120	u1fk.1.exe	97

C:\Users\Admin\AppData\Local\Temp\6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe
"C:\Users\Admin\AppData\Local\Temp\6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Users\Admin\AppData\Local\Temp\u1fk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1fk.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 940 -s 1288
    3⤵
    - Program crash
    PID:1532
- C:\Users\Admin\AppData\Local\Temp\u1fk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1fk.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:2120
- - 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:1648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 1196
  2⤵
  - Program crash
  PID:1008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1856 -ip 1856
1⤵
PID:2952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 940 -ip 940
1⤵
PID:1396

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
8a2c968e1edd7fd32439210cdde8c45a

SHA1
25b9919153e4ab4836740a19582971d6ba166a43

SHA256
44c12ab6644855f5af457096f9dea2d57679afcefb6cdc8952cb1cfc09f20660

SHA512
5fdf0c98e0be9aa48b6b3e38574f8abbc3cb8db47c2133768e7b6ea63722572f9ed65c003afd3d17677d7d48994d68f1ac64b5f62aa97561566222f9c9db64cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1fk.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1fk.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/940-53-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/940-107-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/940-105-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/940-103-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/940-100-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/940-55-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1648-88-0x0000026DEF190000-0x0000026DEF198000-memory.dmp

Filesize
32KB

Download
memory/1648-83-0x0000026DEAE40000-0x0000026DEB140000-memory.dmp

Filesize
3.0MB

Download
memory/1648-97-0x0000026DF00F0000-0x0000026DF010E000-memory.dmp

Filesize
120KB

Download
memory/1648-96-0x0000026DF0190000-0x0000026DF0206000-memory.dmp

Filesize
472KB

Download
memory/1648-95-0x0000026DF00B0000-0x0000026DF00BC000-memory.dmp

Filesize
48KB

Download
memory/1648-68-0x0000026DE32C0000-0x0000026DE6AF4000-memory.dmp

Filesize
56.2MB

Download
memory/1648-69-0x0000026DEA890000-0x0000026DEA99A000-memory.dmp

Filesize
1.0MB

Download
memory/1648-70-0x0000026DE87D0000-0x0000026DE87E0000-memory.dmp

Filesize
64KB

Download
memory/1648-71-0x0000026DEA9A0000-0x0000026DEA9AC000-memory.dmp

Filesize
48KB

Download
memory/1648-72-0x0000026DEA610000-0x0000026DEA624000-memory.dmp

Filesize
80KB

Download
memory/1648-73-0x0000026DEAA00000-0x0000026DEAA24000-memory.dmp

Filesize
144KB

Download
memory/1648-74-0x0000026DEA5F0000-0x0000026DEA5FA000-memory.dmp

Filesize
40KB

Download
memory/1648-75-0x0000026DEAC90000-0x0000026DEACBA000-memory.dmp

Filesize
168KB

Download
memory/1648-76-0x0000026DEACC0000-0x0000026DEAD72000-memory.dmp

Filesize
712KB

Download
memory/1648-77-0x0000026DEADC0000-0x0000026DEAE10000-memory.dmp

Filesize
320KB

Download
memory/1648-78-0x0000026DEAE10000-0x0000026DEAE32000-memory.dmp

Filesize
136KB

Download
memory/1648-79-0x0000026DEA600000-0x0000026DEA60A000-memory.dmp

Filesize
40KB

Download
memory/1648-92-0x0000026DF08C0000-0x0000026DF0DE8000-memory.dmp

Filesize
5.2MB

Download
memory/1648-85-0x0000026DEF860000-0x0000026DEF868000-memory.dmp

Filesize
32KB

Download
memory/1648-86-0x0000026DEF1A0000-0x0000026DEF1D8000-memory.dmp

Filesize
224KB

Download
memory/1648-87-0x0000026DEF170000-0x0000026DEF17E000-memory.dmp

Filesize
56KB

Download
memory/1648-91-0x0000026DF0090000-0x0000026DF00B2000-memory.dmp

Filesize
136KB

Download
memory/1648-89-0x0000026DF0310000-0x0000026DF031A000-memory.dmp

Filesize
40KB

Download
memory/1648-90-0x0000026DF0330000-0x0000026DF0392000-memory.dmp

Filesize
392KB

Download
memory/1856-1-0x0000000002C80000-0x0000000002D80000-memory.dmp

Filesize
1024KB

Download
memory/1856-32-0x0000000004790000-0x00000000047FC000-memory.dmp

Filesize
432KB

Download
memory/1856-31-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/1856-33-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1856-16-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/1856-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1856-2-0x0000000004790000-0x00000000047FC000-memory.dmp

Filesize
432KB

Download
memory/2120-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2120-67-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download