stealc | fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12

Analysis

max time kernel
36s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 06:52

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General

Target

fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe
Size

367KB
MD5

c90428760a8081ea0cc1f8482cd5d957
SHA1

10361e74c70852bf754c36ec4b801a72626af453
SHA256

fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12
SHA512

55c2cb510a61b30f1872b46afbf0692231ec5f7d54e005f767b80225e12e22cf96a3dcf899d82aac7c0d605c319f107a5bca5770c986629f221daccecab9b8fd
SSDEEP

6144:Jfvea1snS42x5pK0JcR4DypPotYhIiMuiEIMmH8d/zKXT8g4:Bvea1snS425K0JcRhuNiMEO8pe8g4

Score

10^/10

stealc zgrat 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/1980-75-0x000001DF9CE40000-0x000001DFA0674000-memory.dmp	family_zgrat_v1
behavioral1/memory/1980-77-0x000001DFBAEE0000-0x000001DFBAFEA000-memory.dmp	family_zgrat_v1
behavioral1/memory/1980-81-0x000001DFBAD40000-0x000001DFBAD64000-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 1 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe

Executes dropped EXE 2 IoCs

pid	Process
3528	u1gw.0.exe
2012	u1gw.1.exe

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
824	1904	WerFault.exe	89
2248	3528	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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1gw.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1gw.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1gw.1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe
2012	u1gw.1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 3528	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	90
PID 1904 wrote to memory of 3528	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	90
PID 1904 wrote to memory of 3528	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	90
PID 1904 wrote to memory of 2012	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	100
PID 1904 wrote to memory of 2012	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	100
PID 1904 wrote to memory of 2012	1904	fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe	100

C:\Users\Admin\AppData\Local\Temp\fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe
"C:\Users\Admin\AppData\Local\Temp\fb72cbf91f8f821b6089d93b681cf491ebdbe40e4ebdefa42024372325810e12.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Local\Temp\u1gw.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1gw.0.exe"
  2⤵
  - Executes dropped EXE
  PID:3528
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3528 -s 820
    3⤵
    - Program crash
    PID:2248
- C:\Users\Admin\AppData\Local\Temp\u1gw.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1gw.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2012
- - 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⤵
    PID:1980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 868
  2⤵
  - Program crash
  PID:824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1904 -ip 1904
1⤵
PID:3448

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3932 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:2212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3528 -ip 3528
1⤵
PID:2012

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\iolo\dm\ioloDMLog.txt

Filesize
2KB

MD5
f0eef1dec06c33085d83774cc4323d31

SHA1
a37f3c421b4129796dbec3fef5094084e1223315

SHA256
431fb7ba9fdf87569ad9cd26c627d5f5e2dc5617b3450131511cb7a6b4378162

SHA512
aaeb3c3e6a18b32ba2db3f352bca903d24d28004a27f28d0a2547d03dabcfc7ed9cd790a6e709ff312df4e0f5cf4d237f1538dec911d40b4e41b964003bd3df7

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1gw.0.exe

Filesize
226KB

MD5
6891c527d4d65692716c149981e770ff

SHA1
ac4ba0be44795c437f860d710bdd0e3157d17caf

SHA256
b37a558c37740094e51a1b04fa05280e3f28b2592f5881d96ae5f5a05e2c5902

SHA512
1195f321c53df745aec5350e606293507f89e8f3dce3b1c58244f6a6eb9de5cdacdc222960663f7b3e03be69804bbbf8905764c2d1a21dc745e21edba9112e15

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1gw.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1904-1-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

Filesize
1024KB

Download
memory/1904-5-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/1904-14-0x0000000001AB0000-0x0000000001BB0000-memory.dmp

Filesize
1024KB

Download
memory/1904-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1904-2-0x00000000037A0000-0x000000000380C000-memory.dmp

Filesize
432KB

Download
memory/1904-17-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/1904-42-0x0000000000400000-0x0000000001A26000-memory.dmp

Filesize
22.1MB

Download
memory/1904-19-0x00000000037A0000-0x000000000380C000-memory.dmp

Filesize
432KB

Download
memory/1904-21-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1904-43-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1980-79-0x000001DFA2420000-0x000001DFA242C000-memory.dmp

Filesize
48KB

Download
memory/1980-99-0x000001DFC0560000-0x000001DFC0582000-memory.dmp

Filesize
136KB

Download
memory/1980-107-0x000001DFC05D0000-0x000001DFC05EE000-memory.dmp

Filesize
120KB

Download
memory/1980-104-0x000001DFC0660000-0x000001DFC06D6000-memory.dmp

Filesize
472KB

Download
memory/1980-103-0x000001DFC05C0000-0x000001DFC05CC000-memory.dmp

Filesize
48KB

Download
memory/1980-100-0x000001DFC0CC0000-0x000001DFC11E8000-memory.dmp

Filesize
5.2MB

Download
memory/1980-98-0x000001DFC0500000-0x000001DFC0562000-memory.dmp

Filesize
392KB

Download
memory/1980-75-0x000001DF9CE40000-0x000001DFA0674000-memory.dmp

Filesize
56.2MB

Download
memory/1980-77-0x000001DFBAEE0000-0x000001DFBAFEA000-memory.dmp

Filesize
1.0MB

Download
memory/1980-97-0x000001DFC0780000-0x000001DFC078A000-memory.dmp

Filesize
40KB

Download
memory/1980-78-0x000001DFA0AD0000-0x000001DFA0AE0000-memory.dmp

Filesize
64KB

Download
memory/1980-80-0x000001DFA0AE0000-0x000001DFA0AF4000-memory.dmp

Filesize
80KB

Download
memory/1980-81-0x000001DFBAD40000-0x000001DFBAD64000-memory.dmp

Filesize
144KB

Download
memory/1980-82-0x000001DFBAD70000-0x000001DFBAD7A000-memory.dmp

Filesize
40KB

Download
memory/1980-84-0x000001DFBB160000-0x000001DFBB212000-memory.dmp

Filesize
712KB

Download
memory/1980-83-0x000001DFBB130000-0x000001DFBB15A000-memory.dmp

Filesize
168KB

Download
memory/1980-85-0x000001DFBB260000-0x000001DFBB2B0000-memory.dmp

Filesize
320KB

Download
memory/1980-86-0x000001DFBB210000-0x000001DFBB232000-memory.dmp

Filesize
136KB

Download
memory/1980-87-0x000001DFA0AA0000-0x000001DFA0AAA000-memory.dmp

Filesize
40KB

Download
memory/1980-91-0x000001DFBB2B0000-0x000001DFBB5B0000-memory.dmp

Filesize
3.0MB

Download
memory/1980-93-0x000001DFBFCD0000-0x000001DFBFCD8000-memory.dmp

Filesize
32KB

Download
memory/1980-95-0x000001DFBF5E0000-0x000001DFBF5EE000-memory.dmp

Filesize
56KB

Download
memory/1980-94-0x000001DFBF610000-0x000001DFBF648000-memory.dmp

Filesize
224KB

Download
memory/1980-96-0x000001DFBF600000-0x000001DFBF608000-memory.dmp

Filesize
32KB

Download
memory/2012-74-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2012-60-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3528-15-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-20-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-61-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-16-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-105-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-18-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-109-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download
memory/3528-111-0x0000000000400000-0x0000000001A03000-memory.dmp

Filesize
22.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads