stealc | 3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714

General

Target

3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe
Size

382KB
MD5

0be517a3810d35571ff7c996721578b1
SHA1

1fac3c40ff1e740aba94eab89e065baabd88b3b5
SHA256

3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714
SHA512

917cb07c980d604f0995ef2aa9b7e62f73d9f85797e14f8a76ab9be2dec51108c63b71eca9168d9a2dd7b32f65b6cdb565d2c9098c4dd48ab573e7f7cad553d5
SSDEEP

6144:L0NTKE3CDWHhQgoFZHaJtrzQr792AiXQvdUodm7iKMceJK2s:L0NGMCaXoFdAFzQrJviXq3w7IJK2s

Score

10^/10

stealc zgrat discovery rat spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/5076-81-0x0000019A59F40000-0x0000019A5D774000-memory.dmp	family_zgrat_v1
behavioral1/memory/5076-82-0x0000019A797C0000-0x0000019A798CA000-memory.dmp	family_zgrat_v1
behavioral1/memory/5076-86-0x0000019A5F580000-0x0000019A5F5A4000-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 3 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	u1yg.0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	u1yg.1.exe

Executes dropped EXE 2 IoCs

pid	Process
4996	u1yg.0.exe
4840	u1yg.1.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
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
1212	2536	WerFault.exe	79
3228	4996	WerFault.exe	83

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	u1yg.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1yg.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1yg.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	u1yg.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1yg.0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2840	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4996	u1yg.0.exe
4996	u1yg.0.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe
4840	u1yg.1.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 4996	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	83
PID 2536 wrote to memory of 4996	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	83
PID 2536 wrote to memory of 4996	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	83
PID 2536 wrote to memory of 4840	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	85
PID 2536 wrote to memory of 4840	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	85
PID 2536 wrote to memory of 4840	2536	3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe	85
PID 4996 wrote to memory of 2700	4996	u1yg.0.exe	90
PID 4996 wrote to memory of 2700	4996	u1yg.0.exe	90
PID 4996 wrote to memory of 2700	4996	u1yg.0.exe	90
PID 2700 wrote to memory of 2840	2700	cmd.exe	94
PID 2700 wrote to memory of 2840	2700	cmd.exe	94
PID 2700 wrote to memory of 2840	2700	cmd.exe	94
PID 4840 wrote to memory of 5076	4840	u1yg.1.exe	95
PID 4840 wrote to memory of 5076	4840	u1yg.1.exe	95

C:\Users\Admin\AppData\Local\Temp\3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe
"C:\Users\Admin\AppData\Local\Temp\3bfa23ea6630847ebf86f2fb19709ef7d289eeea0849b5cb81f25e3366c1a714.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\u1yg.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1yg.0.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\u1yg.0.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:2840
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4996 -s 1416
    3⤵
    - Program crash
    PID:3228
- C:\Users\Admin\AppData\Local\Temp\u1yg.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1yg.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:4840
- - 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:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2536 -s 984
  2⤵
  - Program crash
  PID:1212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2536 -ip 2536
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4996 -ip 4996
1⤵
PID:4696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\u1yg.0.exe

Filesize
240KB

MD5
a5a396650cc1831759ee447062d4593a

SHA1
37bd8f9b348b16378ea9023489243b8725addf82

SHA256
a1f50375231c83613bd18aee62fdeccb52c06445d1eebf5fc7293246746f24a5

SHA512
a3063b2168164df6fd19cec76c7f07f30c4dae3fa5c00b7efb9c3005edbf564705701adbba575280373c916cf31e6450b246d6046de5ca384897d2751ffc2d4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1yg.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/2536-33-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2536-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2536-16-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/2536-2-0x0000000004780000-0x00000000047EC000-memory.dmp

Filesize
432KB

Download
memory/2536-1-0x0000000002B20000-0x0000000002C20000-memory.dmp

Filesize
1024KB

Download
memory/2536-32-0x0000000004780000-0x00000000047EC000-memory.dmp

Filesize
432KB

Download
memory/2536-31-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/4840-68-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4840-80-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4996-38-0x0000000000400000-0x0000000002AF9000-memory.dmp

Filesize
39.0MB

Download
memory/4996-45-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4996-67-0x0000000000400000-0x0000000002AF9000-memory.dmp

Filesize
39.0MB

Download
memory/5076-85-0x0000019A5F520000-0x0000019A5F534000-memory.dmp

Filesize
80KB

Download
memory/5076-92-0x0000019A5F5C0000-0x0000019A5F5CA000-memory.dmp

Filesize
40KB

Download
memory/5076-84-0x0000019A5F530000-0x0000019A5F53C000-memory.dmp

Filesize
48KB

Download
memory/5076-83-0x0000019A5F510000-0x0000019A5F520000-memory.dmp

Filesize
64KB

Download
memory/5076-81-0x0000019A59F40000-0x0000019A5D774000-memory.dmp

Filesize
56.2MB

Download
memory/5076-86-0x0000019A5F580000-0x0000019A5F5A4000-memory.dmp

Filesize
144KB

Download
memory/5076-87-0x0000019A5F5B0000-0x0000019A5F5BA000-memory.dmp

Filesize
40KB

Download
memory/5076-88-0x0000019A795D0000-0x0000019A795FA000-memory.dmp

Filesize
168KB

Download
memory/5076-89-0x0000019A79A10000-0x0000019A79AC2000-memory.dmp

Filesize
712KB

Download
memory/5076-90-0x0000019A79AC0000-0x0000019A79B10000-memory.dmp

Filesize
320KB

Download
memory/5076-91-0x0000019A79630000-0x0000019A79652000-memory.dmp

Filesize
136KB

Download
memory/5076-82-0x0000019A797C0000-0x0000019A798CA000-memory.dmp

Filesize
1.0MB

Download
memory/5076-96-0x0000019A79B10000-0x0000019A79E10000-memory.dmp

Filesize
3.0MB

Download
memory/5076-98-0x0000019A79790000-0x0000019A79798000-memory.dmp

Filesize
32KB

Download
memory/5076-99-0x0000019A7DE10000-0x0000019A7DE48000-memory.dmp

Filesize
224KB

Download
memory/5076-100-0x0000019A797A0000-0x0000019A797AE000-memory.dmp

Filesize
56KB

Download
memory/5076-101-0x0000019A7D750000-0x0000019A7D758000-memory.dmp

Filesize
32KB

Download
memory/5076-102-0x0000019A00D80000-0x0000019A00D8A000-memory.dmp

Filesize
40KB

Download
memory/5076-103-0x0000019A00DA0000-0x0000019A00E02000-memory.dmp

Filesize
392KB

Download
memory/5076-104-0x0000019A00B00000-0x0000019A00B22000-memory.dmp

Filesize
136KB

Download
memory/5076-105-0x0000019A01330000-0x0000019A01858000-memory.dmp

Filesize
5.2MB

Download
memory/5076-108-0x0000019A00B20000-0x0000019A00B2C000-memory.dmp

Filesize
48KB

Download
memory/5076-109-0x0000019A7E310000-0x0000019A7E386000-memory.dmp

Filesize
472KB

Download
memory/5076-110-0x0000019A79E30000-0x0000019A79E4E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads