stealc | 7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
09/05/2024, 16:35

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General

Target

7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe
Size

384KB
MD5

3d4ce3bb2e576cb652ffbcf92ac6b832
SHA1

733ba86aa7b923c107ba48710e0ffa7f2fbd339c
SHA256

7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc
SHA512

b53f430eba5fd6748b67c1a34e6188c09ad5dc52327c070bb812e176b92b83c1a35cfa0053d5d5921b94012ae9b5e97c3ec6d3ea111d224a901d6604095263be
SSDEEP

6144:CvNcF7Kk1SAa5i2mfLPrzOMWRTco+7ASGdHhyUZwS4:CvNo+nAa5gnXo+c8aT4

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/2448-67-0x000002C33F5E0000-0x000002C342E14000-memory.dmp	family_zgrat_v1
behavioral2/memory/2448-68-0x000002C35D890000-0x000002C35D99A000-memory.dmp	family_zgrat_v1
behavioral2/memory/2448-72-0x000002C35D460000-0x000002C35D484000-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
3152	u3i4.0.exe
2284	u3i4.1.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
656	4540	WerFault.exe	80
1804	3152	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	u3i4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3i4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3i4.1.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	u3i4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u3i4.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3152	u3i4.0.exe
3152	u3i4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe
2284	u3i4.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 3152	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	83
PID 4540 wrote to memory of 3152	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	83
PID 4540 wrote to memory of 3152	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	83
PID 4540 wrote to memory of 2284	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	86
PID 4540 wrote to memory of 2284	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	86
PID 4540 wrote to memory of 2284	4540	7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe	86
PID 2284 wrote to memory of 2448	2284	u3i4.1.exe	91
PID 2284 wrote to memory of 2448	2284	u3i4.1.exe	91

C:\Users\Admin\AppData\Local\Temp\7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe
"C:\Users\Admin\AppData\Local\Temp\7ece91487f9d7ad897ce696e8f471ee0e88378fa3e9595a4d9aa208601bdd7bc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Users\Admin\AppData\Local\Temp\u3i4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u3i4.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3152
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 1372
    3⤵
    - Program crash
    PID:1804
- C:\Users\Admin\AppData\Local\Temp\u3i4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u3i4.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2284
- - 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:2448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 704
  2⤵
  - Program crash
  PID:656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4540 -ip 4540
1⤵
PID:2460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3152 -ip 3152
1⤵
PID:1496

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
832b7765312b74c4c3e236bc631e3c2b

SHA1
ace66c656661d11d6eecf9390aef3cf4b36360e9

SHA256
ebf0769201b791ed8d382ab2b096bdf5e019db21c07ae290d53e7465e68b9475

SHA512
69d7196d6f4fa1950a53985b081a2c57678685b0d333827fe1f8e1f0f8396f20f04fa5012aeddb09262c501fcfe344d4cb20e9a9e47d42ab7ea229fc9d45676d

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3i4.0.exe

Filesize
217KB

MD5
1485fe25a6d2bc50d097656c434822f1

SHA1
b8a4f204a92bad32df0e6af82a4ae04d71910ba9

SHA256
044d3469fd7a09f42ba4d342604e002f0ba770528747ba6d3cb7c4b77a975be6

SHA512
18346906dd80342281579602860c514f8e535bf25b3a0f1abe56f08aab52f203323b8d279e8df7c3723acf989aa0d438866675c22095386f8632a543b5dceaf0

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3i4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/2284-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2284-66-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2448-75-0x000002C35D4C0000-0x000002C35D4EA000-memory.dmp

Filesize
168KB

Download
memory/2448-78-0x000002C343310000-0x000002C34331A000-memory.dmp

Filesize
40KB

Download
memory/2448-99-0x000002C35D510000-0x000002C35D6C3000-memory.dmp

Filesize
1.7MB

Download
memory/2448-96-0x000002C362680000-0x000002C36269E000-memory.dmp

Filesize
120KB

Download
memory/2448-95-0x000002C362720000-0x000002C362796000-memory.dmp

Filesize
472KB

Download
memory/2448-94-0x000002C362640000-0x000002C36264C000-memory.dmp

Filesize
48KB

Download
memory/2448-91-0x000002C362E50000-0x000002C363378000-memory.dmp

Filesize
5.2MB

Download
memory/2448-90-0x000002C362620000-0x000002C362642000-memory.dmp

Filesize
136KB

Download
memory/2448-67-0x000002C33F5E0000-0x000002C342E14000-memory.dmp

Filesize
56.2MB

Download
memory/2448-68-0x000002C35D890000-0x000002C35D99A000-memory.dmp

Filesize
1.0MB

Download
memory/2448-70-0x000002C344B30000-0x000002C344B3C000-memory.dmp

Filesize
48KB

Download
memory/2448-69-0x000002C344B10000-0x000002C344B20000-memory.dmp

Filesize
64KB

Download
memory/2448-71-0x000002C344B20000-0x000002C344B34000-memory.dmp

Filesize
80KB

Download
memory/2448-72-0x000002C35D460000-0x000002C35D484000-memory.dmp

Filesize
144KB

Download
memory/2448-73-0x000002C35D490000-0x000002C35D49A000-memory.dmp

Filesize
40KB

Download
memory/2448-89-0x000002C3628C0000-0x000002C362922000-memory.dmp

Filesize
392KB

Download
memory/2448-74-0x000002C35D6D0000-0x000002C35D782000-memory.dmp

Filesize
712KB

Download
memory/2448-76-0x000002C35DB40000-0x000002C35DB90000-memory.dmp

Filesize
320KB

Download
memory/2448-77-0x000002C35DB90000-0x000002C35DBB2000-memory.dmp

Filesize
136KB

Download
memory/2448-88-0x000002C3628A0000-0x000002C3628AA000-memory.dmp

Filesize
40KB

Download
memory/2448-82-0x000002C35DBC0000-0x000002C35DEC0000-memory.dmp

Filesize
3.0MB

Download
memory/2448-84-0x000002C3625F0000-0x000002C3625F8000-memory.dmp

Filesize
32KB

Download
memory/2448-85-0x000002C361F30000-0x000002C361F68000-memory.dmp

Filesize
224KB

Download
memory/2448-87-0x000002C361F20000-0x000002C361F28000-memory.dmp

Filesize
32KB

Download
memory/2448-86-0x000002C361F00000-0x000002C361F0E000-memory.dmp

Filesize
56KB

Download
memory/3152-53-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3152-37-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3152-101-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3152-105-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3152-109-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3152-113-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4540-31-0x0000000004840000-0x00000000048AC000-memory.dmp

Filesize
432KB

Download
memory/4540-1-0x0000000002D50000-0x0000000002E50000-memory.dmp

Filesize
1024KB

Download
memory/4540-2-0x0000000004840000-0x00000000048AC000-memory.dmp

Filesize
432KB

Download
memory/4540-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4540-32-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4540-30-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download