stealc | 64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40

Analysis

max time kernel
146s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
16/04/2024, 12:15

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General

Target

64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe
Size

416KB
MD5

efab685a0c546ac40f81c8878e6f584c
SHA1

2326db640376066cc74f221be5a4714e2fa6418b
SHA256

64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40
SHA512

1306a5b9ecb033c6c9be5e5cfe9da86d63413cc28f8f5b44d0c57e1c6fc29896bcbef634a23ff083ee563d0306f819c1ef6ee106589982d1fafa6fe61ec471be
SSDEEP

6144:cLKa1sNpntPLMzrkm4EMtsAp13S/IVPsenZBX5wQ/P31egNN0VHLR4Ia:ce4IPYXbzMKe13S/sHX5wqP313N0a

Score

10^/10

stealc zgrat discovery rat spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.209

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/1168-121-0x0000028EA16C0000-0x0000028EA4FB8000-memory.dmp	family_zgrat_v1
behavioral2/memory/1168-124-0x0000028EBF7C0000-0x0000028EBF8D0000-memory.dmp	family_zgrat_v1
behavioral2/memory/1168-128-0x0000028EBF500000-0x0000028EBF524000-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
4940	u3n4.0.exe
1340	u3n4.1.exe

Loads dropped DLL 2 IoCs

pid	Process
4940	u3n4.0.exe
4940	u3n4.0.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 232 set thread context of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4844	4940	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	u3n4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3n4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3n4.1.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	u3n4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u3n4.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4940	u3n4.0.exe
4940	u3n4.0.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4940	u3n4.0.exe
4940	u3n4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe
1340	u3n4.1.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 232 wrote to memory of 4720	232	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	80
PID 4720 wrote to memory of 4940	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	81
PID 4720 wrote to memory of 4940	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	81
PID 4720 wrote to memory of 4940	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	81
PID 4720 wrote to memory of 1340	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	84
PID 4720 wrote to memory of 1340	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	84
PID 4720 wrote to memory of 1340	4720	64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe	84
PID 1340 wrote to memory of 1168	1340	u3n4.1.exe	86
PID 1340 wrote to memory of 1168	1340	u3n4.1.exe	86

C:\Users\Admin\AppData\Local\Temp\64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe
"C:\Users\Admin\AppData\Local\Temp\64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:232
- C:\Users\Admin\AppData\Local\Temp\64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe
  "C:\Users\Admin\AppData\Local\Temp\64011973d9316d5b701eeb0c732d4bfde105daf1d3a549b81b15fe5df9bd1e40.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Users\Admin\AppData\Local\Temp\u3n4.0.exe
    "C:\Users\Admin\AppData\Local\Temp\u3n4.0.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:4940
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 2472
      4⤵
      Program crash
      PID:4844
- - C:\Users\Admin\AppData\Local\Temp\u3n4.1.exe
    "C:\Users\Admin\AppData\Local\Temp\u3n4.1.exe"
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:1340
  - - 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
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4940 -ip 4940
1⤵
PID:2100

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\u3n4.0.exe

Filesize
298KB

MD5
bca02d35628620c007e487817e586900

SHA1
a0c4f525ae7870a54240eb2ac5d4117dca179fa6

SHA256
24f9a755c755a95cf5f6d2051d23579ff80fcd60a78c00ba0383484cbd513bd6

SHA512
6415eb256bbb95d4e6db1cc091ea22e8bf5d3dae00b3660a165f480fcb9cbc3429ddd0b6292992d7298d06cd3928695f6c475b5c4a3ad5f5c4b4766f7698de2d

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3n4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/232-2-0x0000000002FF0000-0x000000000305D000-memory.dmp

Filesize
436KB

Download
memory/232-1-0x0000000002E20000-0x0000000002F20000-memory.dmp

Filesize
1024KB

Download
memory/1168-149-0x0000028EC4E90000-0x0000028EC53B8000-memory.dmp

Filesize
5.2MB

Download
memory/1168-135-0x0000028EA6D80000-0x0000028EA6D8A000-memory.dmp

Filesize
40KB

Download
memory/1168-195-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-194-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-193-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-192-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-191-0x00007FFCE40B0000-0x00007FFCE4B72000-memory.dmp

Filesize
10.8MB

Download
memory/1168-178-0x0000028EC47C0000-0x0000028EC47DE000-memory.dmp

Filesize
120KB

Download
memory/1168-173-0x0000028EC4790000-0x0000028EC47B2000-memory.dmp

Filesize
136KB

Download
memory/1168-153-0x0000028EC46F0000-0x0000028EC46FC000-memory.dmp

Filesize
48KB

Download
memory/1168-120-0x00007FFCE40B0000-0x00007FFCE4B72000-memory.dmp

Filesize
10.8MB

Download
memory/1168-121-0x0000028EA16C0000-0x0000028EA4FB8000-memory.dmp

Filesize
57.0MB

Download
memory/1168-152-0x0000028EC4740000-0x0000028EC4790000-memory.dmp

Filesize
320KB

Download
memory/1168-123-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-124-0x0000028EBF7C0000-0x0000028EBF8D0000-memory.dmp

Filesize
1.1MB

Download
memory/1168-125-0x0000028EBF480000-0x0000028EBF490000-memory.dmp

Filesize
64KB

Download
memory/1168-126-0x0000028EBF4A0000-0x0000028EBF4AC000-memory.dmp

Filesize
48KB

Download
memory/1168-127-0x0000028EBF490000-0x0000028EBF4A4000-memory.dmp

Filesize
80KB

Download
memory/1168-128-0x0000028EBF500000-0x0000028EBF524000-memory.dmp

Filesize
144KB

Download
memory/1168-129-0x0000028EBF530000-0x0000028EBF53A000-memory.dmp

Filesize
40KB

Download
memory/1168-131-0x0000028EBFA80000-0x0000028EBFB32000-memory.dmp

Filesize
712KB

Download
memory/1168-130-0x0000028EBF660000-0x0000028EBF68A000-memory.dmp

Filesize
168KB

Download
memory/1168-132-0x0000028EBFB30000-0x0000028EBFBAA000-memory.dmp

Filesize
488KB

Download
memory/1168-133-0x0000028EBFBB0000-0x0000028EBFC12000-memory.dmp

Filesize
392KB

Download
memory/1168-134-0x0000028EBFC90000-0x0000028EBFD06000-memory.dmp

Filesize
472KB

Download
memory/1168-148-0x0000028EC46D0000-0x0000028EC46F2000-memory.dmp

Filesize
136KB

Download
memory/1168-139-0x0000028EBFD10000-0x0000028EC0010000-memory.dmp

Filesize
3.0MB

Download
memory/1168-141-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-143-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-142-0x0000028EC40B0000-0x0000028EC40B8000-memory.dmp

Filesize
32KB

Download
memory/1168-144-0x0000028EBF6B0000-0x0000028EBF6C0000-memory.dmp

Filesize
64KB

Download
memory/1168-145-0x0000028EC4030000-0x0000028EC4068000-memory.dmp

Filesize
224KB

Download
memory/1168-146-0x0000028EC4000000-0x0000028EC400E000-memory.dmp

Filesize
56KB

Download
memory/1168-147-0x0000028EC4950000-0x0000028EC495A000-memory.dmp

Filesize
40KB

Download
memory/1340-119-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1340-34-0x0000000002620000-0x0000000002621000-memory.dmp

Filesize
4KB

Download
memory/1340-107-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4720-5-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4720-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4720-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4720-6-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4720-32-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4940-20-0x0000000002570000-0x0000000002597000-memory.dmp

Filesize
156KB

Download
memory/4940-122-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/4940-106-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/4940-184-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/4940-190-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/4940-39-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4940-19-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/4940-21-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download