stealc | 34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf

Analysis

max time kernel
134s
max time network
144s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
08-05-2024 13:09

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General

Target

34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe
Size

368KB
MD5

8e80240c5046a831a82b33a5110a75a4
SHA1

28b5c1105309c371b0e75c1493370836efc8461e
SHA256

34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf
SHA512

2ff3a8f2efa0b37d579882970bf860bbf377d04b4eff3b1a95645c85e42caae57c945a772b113f055fc058a227ec1f23491ae388494ea9b953d4335907d1c047
SSDEEP

6144:/jRhVhZVNlrECRfaajfnwdgcXlzbrp5nkaALQf4jTfeY:lrLNrEWCazK3XFh5vALQUfeY

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/1528-66-0x000002565F8F0000-0x0000025663124000-memory.dmp	family_zgrat_v1
behavioral2/memory/1528-67-0x000002567D930000-0x000002567DA3A000-memory.dmp	family_zgrat_v1
behavioral2/memory/1528-71-0x0000025664EA0000-0x0000025664EC4000-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
3712	u2uk.0.exe
3340	u2uk.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
1684	3692	WerFault.exe	79
3360	3712	WerFault.exe	81

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	u2uk.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2uk.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2uk.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	u2uk.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2uk.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3712	u2uk.0.exe
3712	u2uk.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1528	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe
3340	u2uk.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 3712	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	81
PID 3692 wrote to memory of 3712	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	81
PID 3692 wrote to memory of 3712	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	81
PID 3692 wrote to memory of 3340	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	84
PID 3692 wrote to memory of 3340	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	84
PID 3692 wrote to memory of 3340	3692	34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe	84
PID 3340 wrote to memory of 1528	3340	u2uk.1.exe	90
PID 3340 wrote to memory of 1528	3340	u2uk.1.exe	90

C:\Users\Admin\AppData\Local\Temp\34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe
"C:\Users\Admin\AppData\Local\Temp\34060ac4115abb0a2facb1763fef3c3d14f81e120edbc38f7860b43ea2633abf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Users\Admin\AppData\Local\Temp\u2uk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2uk.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3712
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 1416
    3⤵
    - Program crash
    PID:3360
- C:\Users\Admin\AppData\Local\Temp\u2uk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2uk.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3340
- - 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:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 1164
  2⤵
  - Program crash
  PID:1684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3692 -ip 3692
1⤵
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3712 -ip 3712
1⤵
PID:3728

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
b8264a45a7c7c4425281aa6c6ef9e07f

SHA1
5031cb49993e7b22763dbdbcd4f953e6c8eac7c5

SHA256
59d0b2ae7e7d4be512e7eaa84cc113a57bff7bce3e1d4b8213f4e270616b05bf

SHA512
40643090b0fd79c195b4cb7aca7cba394ef9ecd25f8dfc9a8172e9c8c279dfc9e52e435ad40a848bc204b810165d7f2d62b1872655c2caa72dc3db8f5649e499

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2uk.0.exe

Filesize
226KB

MD5
c4b38f17b16a0b545d989a5e7f192308

SHA1
7325ba75f76855f332e840d595cadc591ea220af

SHA256
45072f942cb27587d1815a9c079c066c85ac313fe1388fd61dd69c77bdc68b4b

SHA512
ca30aa925c6bec667fa4aceda9918d9e7c1ddee1fb7eded4ee266f6f6ae2d3e2fea7070049dc28540615832fc2e60e2821aabc839f468d446b44e082558ef041

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2uk.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1528-86-0x000002567F9B0000-0x000002567F9B8000-memory.dmp

Filesize
32KB

Download
memory/1528-66-0x000002565F8F0000-0x0000025663124000-memory.dmp

Filesize
56.2MB

Download
memory/1528-73-0x000002567D7D0000-0x000002567D7FA000-memory.dmp

Filesize
168KB

Download
memory/1528-96-0x000002567FC60000-0x000002567FC7E000-memory.dmp

Filesize
120KB

Download
memory/1528-95-0x000002567FD40000-0x000002567FDB6000-memory.dmp

Filesize
472KB

Download
memory/1528-74-0x000002567DC00000-0x000002567DCB2000-memory.dmp

Filesize
712KB

Download
memory/1528-93-0x0000025602B00000-0x0000025602B0C000-memory.dmp

Filesize
48KB

Download
memory/1528-90-0x0000025603350000-0x0000025603878000-memory.dmp

Filesize
5.2MB

Download
memory/1528-89-0x0000025602E00000-0x0000025602E22000-memory.dmp

Filesize
136KB

Download
memory/1528-88-0x0000025602DA0000-0x0000025602E02000-memory.dmp

Filesize
392KB

Download
memory/1528-87-0x0000025602D80000-0x0000025602D8A000-memory.dmp

Filesize
40KB

Download
memory/1528-83-0x000002567F990000-0x000002567F998000-memory.dmp

Filesize
32KB

Download
memory/1528-67-0x000002567D930000-0x000002567DA3A000-memory.dmp

Filesize
1.0MB

Download
memory/1528-75-0x000002567DCB0000-0x000002567DD00000-memory.dmp

Filesize
320KB

Download
memory/1528-68-0x0000025664E00000-0x0000025664E10000-memory.dmp

Filesize
64KB

Download
memory/1528-70-0x0000025664E10000-0x0000025664E24000-memory.dmp

Filesize
80KB

Download
memory/1528-71-0x0000025664EA0000-0x0000025664EC4000-memory.dmp

Filesize
144KB

Download
memory/1528-72-0x0000025664ED0000-0x0000025664EDA000-memory.dmp

Filesize
40KB

Download
memory/1528-84-0x000002567FC80000-0x000002567FCB8000-memory.dmp

Filesize
224KB

Download
memory/1528-85-0x000002567F9A0000-0x000002567F9AE000-memory.dmp

Filesize
56KB

Download
memory/1528-69-0x0000025664E20000-0x0000025664E2C000-memory.dmp

Filesize
48KB

Download
memory/1528-76-0x000002567DA40000-0x000002567DA62000-memory.dmp

Filesize
136KB

Download
memory/1528-77-0x0000025664DE0000-0x0000025664DEA000-memory.dmp

Filesize
40KB

Download
memory/1528-81-0x000002567DD00000-0x000002567E000000-memory.dmp

Filesize
3.0MB

Download
memory/3340-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3340-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3692-30-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/3692-15-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/3692-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3692-1-0x0000000001AD0000-0x0000000001BD0000-memory.dmp

Filesize
1024KB

Download
memory/3692-2-0x0000000003740000-0x00000000037AC000-memory.dmp

Filesize
432KB

Download
memory/3692-31-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3712-13-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-36-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-94-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-102-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-100-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-14-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3712-104-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download