stealc | 9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0

Analysis

max time kernel
131s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 23:52

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General

Target

9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe
Size

365KB
MD5

493cf2ea13df55a095a64e890695cf3b
SHA1

0bec79b9fd343195ad28748bdcfb3a6273487b37
SHA256

9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0
SHA512

db5fcde0ba6d77cb55b08336de8bf1f1b87a742ba1a073dc2e2c8015cf0b961513e1f771ced5c98ff9dd4bdc0c3aafb2f1edfdf84276e65aed9022920657681d
SSDEEP

6144:mfcBWeUkksvXwBbM4HxlzmJp2C5kbX1Z0DR7M1jTs5gYTmWM:mfcUeGzhHxNQKX1eDR7un0mWM

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/3496-67-0x000001F842F60000-0x000001F846794000-memory.dmp	family_zgrat_v1
behavioral1/memory/3496-68-0x000001F862920000-0x000001F862A2A000-memory.dmp	family_zgrat_v1
behavioral1/memory/3496-72-0x000001F846C90000-0x000001F846CB4000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	u4nc.1.exe

Executes dropped EXE 2 IoCs

pid	Process
5320	u4nc.0.exe
3716	u4nc.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
1220	6024	WerFault.exe	80
4088	5320	WerFault.exe	90

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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u4nc.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u4nc.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u4nc.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	u4nc.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u4nc.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5320	u4nc.0.exe
5320	u4nc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3496	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe
3716	u4nc.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 6024 wrote to memory of 5320	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	90
PID 6024 wrote to memory of 5320	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	90
PID 6024 wrote to memory of 5320	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	90
PID 6024 wrote to memory of 3716	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	92
PID 6024 wrote to memory of 3716	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	92
PID 6024 wrote to memory of 3716	6024	9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe	92
PID 3716 wrote to memory of 3496	3716	u4nc.1.exe	97
PID 3716 wrote to memory of 3496	3716	u4nc.1.exe	97

C:\Users\Admin\AppData\Local\Temp\9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe
"C:\Users\Admin\AppData\Local\Temp\9e207b9ccdca9e8dcf77295a5ca62e7245f48a9b86b4e8b659d63719a70960f0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:6024
- C:\Users\Admin\AppData\Local\Temp\u4nc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u4nc.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:5320
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5320 -s 1296
    3⤵
    - Program crash
    PID:4088
- C:\Users\Admin\AppData\Local\Temp\u4nc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u4nc.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:3716
- - 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:3496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 6024 -s 1144
  2⤵
  - Program crash
  PID:1220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 6024 -ip 6024
1⤵
PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 5320 -ip 5320
1⤵
PID:4464

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
fd372a9e6855b4110cf0b01b3bc2749e

SHA1
f6d170708da65d16409e72322d504c61885f4450

SHA256
9379615cd64f22b064691d176716dc4a8c89da527747f73c23b8976033bb14dc

SHA512
22b7feeb2b339c42ba1210eca39454a2276328eafde1941adee2718366a3311feed0c146e284c3585745c94b9b3498473851ff866934203cd00e9d2f8be44951

Download Submit
C:\Users\Admin\AppData\Local\Temp\u4nc.0.exe

Filesize
223KB

MD5
ac3b1a30e96b6d89ce98a21bb5b2093a

SHA1
4270104678195b8cad3520a704c556155a0a65b5

SHA256
803946c2712aec2b60b54b3cd7c3375a9a0158e7ccbfbd4ab8a66e6ddfc7d463

SHA512
65e74527ffa9d6e776d063db44322080315a5a9eb13bb67acd61be6e65862ec127366d742beca349c7ca8281e2f67193bafc14c8c0ee3f222b19b452d05c8491

Download Submit
C:\Users\Admin\AppData\Local\Temp\u4nc.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/3496-88-0x000001F866E80000-0x000001F866E88000-memory.dmp

Filesize
32KB

Download
memory/3496-91-0x000001F867D30000-0x000001F867D52000-memory.dmp

Filesize
136KB

Download
memory/3496-97-0x000001F862E90000-0x000001F862EAE000-memory.dmp

Filesize
120KB

Download
memory/3496-96-0x000001F867E30000-0x000001F867EA6000-memory.dmp

Filesize
472KB

Download
memory/3496-95-0x000001F867D50000-0x000001F867D5C000-memory.dmp

Filesize
48KB

Download
memory/3496-92-0x000001F868560000-0x000001F868A88000-memory.dmp

Filesize
5.2MB

Download
memory/3496-89-0x000001F867FB0000-0x000001F867FBA000-memory.dmp

Filesize
40KB

Download
memory/3496-90-0x000001F867FD0000-0x000001F868032000-memory.dmp

Filesize
392KB

Download
memory/3496-74-0x000001F860CA0000-0x000001F860CCA000-memory.dmp

Filesize
168KB

Download
memory/3496-87-0x000001F866E60000-0x000001F866E6E000-memory.dmp

Filesize
56KB

Download
memory/3496-86-0x000001F866EA0000-0x000001F866ED8000-memory.dmp

Filesize
224KB

Download
memory/3496-67-0x000001F842F60000-0x000001F846794000-memory.dmp

Filesize
56.2MB

Download
memory/3496-68-0x000001F862920000-0x000001F862A2A000-memory.dmp

Filesize
1.0MB

Download
memory/3496-69-0x000001F846C60000-0x000001F846C70000-memory.dmp

Filesize
64KB

Download
memory/3496-70-0x000001F846C80000-0x000001F846C8C000-memory.dmp

Filesize
48KB

Download
memory/3496-71-0x000001F846C70000-0x000001F846C84000-memory.dmp

Filesize
80KB

Download
memory/3496-75-0x000001F862590000-0x000001F862642000-memory.dmp

Filesize
712KB

Download
memory/3496-73-0x000001F846CB0000-0x000001F846CBA000-memory.dmp

Filesize
40KB

Download
memory/3496-84-0x000001F862900000-0x000001F862908000-memory.dmp

Filesize
32KB

Download
memory/3496-72-0x000001F846C90000-0x000001F846CB4000-memory.dmp

Filesize
144KB

Download
memory/3496-78-0x000001F8485C0000-0x000001F8485CA000-memory.dmp

Filesize
40KB

Download
memory/3496-77-0x000001F862640000-0x000001F862662000-memory.dmp

Filesize
136KB

Download
memory/3496-82-0x000001F862B70000-0x000001F862E70000-memory.dmp

Filesize
3.0MB

Download
memory/3496-76-0x000001F860D30000-0x000001F860D80000-memory.dmp

Filesize
320KB

Download
memory/3716-66-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3716-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/5320-15-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-105-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-103-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-13-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-101-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-99-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/5320-14-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/6024-1-0x0000000002650000-0x0000000002750000-memory.dmp

Filesize
1024KB

Download
memory/6024-37-0x00000000041E0000-0x000000000424C000-memory.dmp

Filesize
432KB

Download
memory/6024-34-0x0000000000400000-0x0000000002597000-memory.dmp

Filesize
33.6MB

Download
memory/6024-2-0x00000000041E0000-0x000000000424C000-memory.dmp

Filesize
432KB

Download
memory/6024-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/6024-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download