stealc | b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d

Analysis

max time kernel
142s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 10:02

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General

Target

b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe
Size

417KB
MD5

b213132a5da500333667266597314442
SHA1

4d0d36e7caf6a9f1d5b11d0c4d2a12de90d6d11f
SHA256

b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d
SHA512

904f73be3337ff86ce4d473d98c151ca6521ad31dd406a99822b0ed5264ea8e79532f3a0ef71037cb1b5dd77a077b2ada7c1fafe8fe852f780a95fe1c7f854cb
SSDEEP

12288:0H9S9mUikIgN8hRxsG207aR7FPDROmjLtNeoDI:0d7mkRH7MJbjL5I

Score

10^/10

stealc zgrat discovery rat spyware 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/5012-105-0x000001DCD6D40000-0x000001DCDA574000-memory.dmp	family_zgrat_v1
behavioral1/memory/5012-106-0x000001DCF5D90000-0x000001DCF5E9A000-memory.dmp	family_zgrat_v1
behavioral1/memory/5012-110-0x000001DCF4A60000-0x000001DCF4A84000-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	u1o8.1.exe

Executes dropped EXE 2 IoCs

pid	Process
2080	u1o8.0.exe
1148	u1o8.1.exe

Loads dropped DLL 2 IoCs

pid	Process
2080	u1o8.0.exe
2080	u1o8.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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
1568	2168	WerFault.exe	81
1916	2080	WerFault.exe	91

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	u1o8.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1o8.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1o8.1.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	u1o8.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1o8.0.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2080	u1o8.0.exe
2080	u1o8.0.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2080	u1o8.0.exe
2080	u1o8.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe
1148	u1o8.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2080	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	91
PID 2168 wrote to memory of 2080	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	91
PID 2168 wrote to memory of 2080	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	91
PID 2168 wrote to memory of 1148	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	94
PID 2168 wrote to memory of 1148	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	94
PID 2168 wrote to memory of 1148	2168	b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe	94
PID 1148 wrote to memory of 5012	1148	u1o8.1.exe	100
PID 1148 wrote to memory of 5012	1148	u1o8.1.exe	100

C:\Users\Admin\AppData\Local\Temp\b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe
"C:\Users\Admin\AppData\Local\Temp\b9a4eddd2355b794a725261e6edccc52615f1b90c3b53f20bf55993dd425849d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Users\Admin\AppData\Local\Temp\u1o8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1o8.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2080
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2080 -s 2408
    3⤵
    - Program crash
    PID:1916
- C:\Users\Admin\AppData\Local\Temp\u1o8.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1o8.1.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:1148
- - 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:5012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 1144
  2⤵
  - Program crash
  PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2168 -ip 2168
1⤵
PID:1240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2080 -ip 2080
1⤵
PID:1132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
2KB

MD5
95f96fd1058b22061e767f75c72ff2b3

SHA1
c412469876c1851cb3a3caba282702e4ee8637e4

SHA256
6e3e8295513a5111f9bda0905ce33009c196edb1ae3eb39e8a78e3c253f2756a

SHA512
51ec0a24d0a157dd6056d6d211bd0b24b9be24d925641cc763d351e196382d7418f552766cf158a9bd22988a7f8d46955aad03c51787c5c65ea5753950755366

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1o8.0.exe

Filesize
275KB

MD5
4d59827a760364256f740c2cad58d8f6

SHA1
5a8f9783ae132ffeff811601207ed7b92d7e38db

SHA256
10b53636b794b111435f1213332cb9e36455457d51748f9057e893e0b93ca654

SHA512
2acf56000787d5da0476b2959c189abdf01a8bef0badb38607f3d1a92ea42cc8564ef29684f73f49683fbc49d54d6a6e8e05c64d00ce931a45435b3590bb8f1f

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1o8.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1148-104-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2080-34-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2080-43-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2080-89-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2080-176-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2080-175-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2080-169-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2080-159-0x0000000000400000-0x0000000002B02000-memory.dmp

Filesize
39.0MB

Download
memory/2168-13-0x0000000000400000-0x0000000002B25000-memory.dmp

Filesize
39.1MB

Download
memory/2168-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2168-28-0x0000000000400000-0x0000000002B25000-memory.dmp

Filesize
39.1MB

Download
memory/2168-29-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2168-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/2168-2-0x0000000004750000-0x00000000047BC000-memory.dmp

Filesize
432KB

Download
memory/5012-114-0x000001DCF5FE0000-0x000001DCF6030000-memory.dmp

Filesize
320KB

Download
memory/5012-127-0x000001DCFB500000-0x000001DCFB562000-memory.dmp

Filesize
392KB

Download
memory/5012-113-0x000001DCF4A90000-0x000001DCF4ABA000-memory.dmp

Filesize
168KB

Download
memory/5012-115-0x000001DCF5A90000-0x000001DCF5AB2000-memory.dmp

Filesize
136KB

Download
memory/5012-116-0x000001DCDC230000-0x000001DCDC23A000-memory.dmp

Filesize
40KB

Download
memory/5012-120-0x000001DCF6030000-0x000001DCF6330000-memory.dmp

Filesize
3.0MB

Download
memory/5012-122-0x000001DCFAA30000-0x000001DCFAA38000-memory.dmp

Filesize
32KB

Download
memory/5012-124-0x000001DCFA340000-0x000001DCFA34E000-memory.dmp

Filesize
56KB

Download
memory/5012-123-0x000001DCFA370000-0x000001DCFA3A8000-memory.dmp

Filesize
224KB

Download
memory/5012-125-0x000001DCFA360000-0x000001DCFA368000-memory.dmp

Filesize
32KB

Download
memory/5012-128-0x000001DCFB560000-0x000001DCFB582000-memory.dmp

Filesize
136KB

Download
memory/5012-112-0x000001DCF5BD0000-0x000001DCF5C82000-memory.dmp

Filesize
712KB

Download
memory/5012-126-0x000001DCFB4E0000-0x000001DCFB4EA000-memory.dmp

Filesize
40KB

Download
memory/5012-129-0x000001DCFBAB0000-0x000001DCFBFD8000-memory.dmp

Filesize
5.2MB

Download
memory/5012-132-0x000001DCFB260000-0x000001DCFB26C000-memory.dmp

Filesize
48KB

Download
memory/5012-136-0x000001DCFB340000-0x000001DCFB3B6000-memory.dmp

Filesize
472KB

Download
memory/5012-111-0x000001DCDC210000-0x000001DCDC21A000-memory.dmp

Filesize
40KB

Download
memory/5012-110-0x000001DCF4A60000-0x000001DCF4A84000-memory.dmp

Filesize
144KB

Download
memory/5012-157-0x000001DCFB2A0000-0x000001DCFB2BE000-memory.dmp

Filesize
120KB

Download
memory/5012-109-0x000001DCDC1F0000-0x000001DCDC204000-memory.dmp

Filesize
80KB

Download
memory/5012-107-0x000001DCDC1E0000-0x000001DCDC1F0000-memory.dmp

Filesize
64KB

Download
memory/5012-108-0x000001DCDC200000-0x000001DCDC20C000-memory.dmp

Filesize
48KB

Download
memory/5012-106-0x000001DCF5D90000-0x000001DCF5E9A000-memory.dmp

Filesize
1.0MB

Download
memory/5012-105-0x000001DCD6D40000-0x000001DCDA574000-memory.dmp

Filesize
56.2MB

Download