stealc | fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477

Analysis

max time kernel
145s
max time network
130s
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 19:35

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General

Target

fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe
Size

384KB
MD5

0f39626443b9a5ecbdac24c96e12728a
SHA1

04c402e550534f0871471f5b80fc5723f283f25c
SHA256

fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477
SHA512

9b74eea35b9ed7ea5e286ec29a676407f72a63c3d90c22616d73d0626a0cf656d9e1aaafd8c07021c38c8bf9cc75cd1a6b6ca4f7198f07c8794aad1d4bf618e6
SSDEEP

6144:2nNm4Za4Cv1GOuLzYI0dBXV9TCS/lMEGFZCTiQJ0s8:2nNNZg1GOuL5SV9TNyEGFTQP8

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/1636-67-0x000001D1155F0000-0x000001D118E24000-memory.dmp	family_zgrat_v1
behavioral2/memory/1636-68-0x000001D133790000-0x000001D13389A000-memory.dmp	family_zgrat_v1
behavioral2/memory/1636-72-0x000001D133510000-0x000001D133534000-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
1312	u2mc.0.exe
2716	u2mc.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
3944	3396	WerFault.exe	78
1420	1312	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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2mc.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2mc.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2mc.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	u2mc.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2mc.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1312	u2mc.0.exe
1312	u2mc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe
2716	u2mc.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 1312	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	81
PID 3396 wrote to memory of 1312	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	81
PID 3396 wrote to memory of 1312	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	81
PID 3396 wrote to memory of 2716	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	84
PID 3396 wrote to memory of 2716	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	84
PID 3396 wrote to memory of 2716	3396	fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe	84
PID 2716 wrote to memory of 1636	2716	u2mc.1.exe	89
PID 2716 wrote to memory of 1636	2716	u2mc.1.exe	89

C:\Users\Admin\AppData\Local\Temp\fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe
"C:\Users\Admin\AppData\Local\Temp\fab860ca07692e3f3f2c438a9faf142288fdbcbb43edf24e8b3b88683a529477.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Users\Admin\AppData\Local\Temp\u2mc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2mc.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1312
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 864
    3⤵
    - Program crash
    PID:1420
- C:\Users\Admin\AppData\Local\Temp\u2mc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2mc.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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:1636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3396 -s 1164
  2⤵
  - Program crash
  PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3396 -ip 3396
1⤵
PID:2932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1312 -ip 1312
1⤵
PID:2316

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\u2mc.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2mc.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1312-37-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1312-112-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1312-108-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1312-104-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1312-100-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1312-53-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/1636-75-0x000001D133A90000-0x000001D133B42000-memory.dmp

Filesize
712KB

Download
memory/1636-84-0x000001D138600000-0x000001D138608000-memory.dmp

Filesize
32KB

Download
memory/1636-99-0x000001D1335D0000-0x000001D133783000-memory.dmp

Filesize
1.7MB

Download
memory/1636-96-0x000001D138670000-0x000001D13868E000-memory.dmp

Filesize
120KB

Download
memory/1636-67-0x000001D1155F0000-0x000001D118E24000-memory.dmp

Filesize
56.2MB

Download
memory/1636-68-0x000001D133790000-0x000001D13389A000-memory.dmp

Filesize
1.0MB

Download
memory/1636-70-0x000001D1334B0000-0x000001D1334BC000-memory.dmp

Filesize
48KB

Download
memory/1636-72-0x000001D133510000-0x000001D133534000-memory.dmp

Filesize
144KB

Download
memory/1636-71-0x000001D1334A0000-0x000001D1334B4000-memory.dmp

Filesize
80KB

Download
memory/1636-69-0x000001D133490000-0x000001D1334A0000-memory.dmp

Filesize
64KB

Download
memory/1636-73-0x000001D133540000-0x000001D13354A000-memory.dmp

Filesize
40KB

Download
memory/1636-74-0x000001D1338A0000-0x000001D1338CA000-memory.dmp

Filesize
168KB

Download
memory/1636-95-0x000001D138710000-0x000001D138786000-memory.dmp

Filesize
472KB

Download
memory/1636-76-0x000001D133B40000-0x000001D133B90000-memory.dmp

Filesize
320KB

Download
memory/1636-77-0x000001D133900000-0x000001D133922000-memory.dmp

Filesize
136KB

Download
memory/1636-82-0x000001D133B90000-0x000001D133E90000-memory.dmp

Filesize
3.0MB

Download
memory/1636-78-0x000001D133580000-0x000001D13358A000-memory.dmp

Filesize
40KB

Download
memory/1636-94-0x000001D138630000-0x000001D13863C000-memory.dmp

Filesize
48KB

Download
memory/1636-87-0x000001D137F30000-0x000001D137F38000-memory.dmp

Filesize
32KB

Download
memory/1636-86-0x000001D137F10000-0x000001D137F1E000-memory.dmp

Filesize
56KB

Download
memory/1636-85-0x000001D137F40000-0x000001D137F78000-memory.dmp

Filesize
224KB

Download
memory/1636-90-0x000001D138930000-0x000001D138952000-memory.dmp

Filesize
136KB

Download
memory/1636-89-0x000001D1388D0000-0x000001D138932000-memory.dmp

Filesize
392KB

Download
memory/1636-88-0x000001D1388B0000-0x000001D1388BA000-memory.dmp

Filesize
40KB

Download
memory/1636-91-0x000001D138E80000-0x000001D1393A8000-memory.dmp

Filesize
5.2MB

Download
memory/2716-54-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2716-66-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3396-1-0x0000000002CB0000-0x0000000002DB0000-memory.dmp

Filesize
1024KB

Download
memory/3396-30-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/3396-31-0x0000000002E90000-0x0000000002EFC000-memory.dmp

Filesize
432KB

Download
memory/3396-32-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3396-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3396-2-0x0000000002E90000-0x0000000002EFC000-memory.dmp

Filesize
432KB

Download