stealc | fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee

Analysis

max time kernel
124s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 09:45

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General

Target

fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe
Size

445KB
MD5

d319c9627b2ce83856c7edf91e175d44
SHA1

455d0b58dac650b41f03120a73f476f2f5684e38
SHA256

fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee
SHA512

7b0616e9d67c0e052fbbe840db1a3e6bd3407992033fea43d073f614ff496cd79cb68d52b3478cd0c08e0c0129e9b8653b4e8fb154e6f9a8b10c2d89ae92f591
SSDEEP

12288:kTGilCmPm9cqblYvBd6pOmrX/CUT+ptBV:3mPm9cMGZApOaX/TEtBV

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
behavioral1/memory/2376-138-0x0000024112EA0000-0x0000024116798000-memory.dmp	family_zgrat_v1
behavioral1/memory/2376-141-0x0000024131D50000-0x0000024131E60000-memory.dmp	family_zgrat_v1
behavioral1/memory/2376-145-0x0000024118420000-0x0000024118444000-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 4 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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	GIECFIEGDB.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	u2b4.1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	u2b4.0.exe

Executes dropped EXE 3 IoCs

pid	Process
4920	u2b4.0.exe
428	u2b4.1.exe
3076	GIECFIEGDB.exe

Loads dropped DLL 2 IoCs

pid	Process
4920	u2b4.0.exe
4920	u2b4.0.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 1 IoCs

pid	pid_target	Process	procid_target
1832	4920	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	u2b4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2b4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2b4.1.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	u2b4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2b4.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3344	PING.EXE

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
4920	u2b4.0.exe
4920	u2b4.0.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4920	u2b4.0.exe
4920	u2b4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe
428	u2b4.1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 4920	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	91
PID 2992 wrote to memory of 4920	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	91
PID 2992 wrote to memory of 4920	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	91
PID 2992 wrote to memory of 428	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	95
PID 2992 wrote to memory of 428	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	95
PID 2992 wrote to memory of 428	2992	fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe	95
PID 428 wrote to memory of 2376	428	u2b4.1.exe	100
PID 428 wrote to memory of 2376	428	u2b4.1.exe	100
PID 4920 wrote to memory of 1136	4920	u2b4.0.exe	103
PID 4920 wrote to memory of 1136	4920	u2b4.0.exe	103
PID 4920 wrote to memory of 1136	4920	u2b4.0.exe	103
PID 1136 wrote to memory of 3076	1136	cmd.exe	107
PID 1136 wrote to memory of 3076	1136	cmd.exe	107
PID 1136 wrote to memory of 3076	1136	cmd.exe	107
PID 3076 wrote to memory of 2156	3076	GIECFIEGDB.exe	109
PID 3076 wrote to memory of 2156	3076	GIECFIEGDB.exe	109
PID 3076 wrote to memory of 2156	3076	GIECFIEGDB.exe	109
PID 2156 wrote to memory of 3344	2156	cmd.exe	111
PID 2156 wrote to memory of 3344	2156	cmd.exe	111
PID 2156 wrote to memory of 3344	2156	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe
"C:\Users\Admin\AppData\Local\Temp\fbd522ac936ebef0aa7d53ed00452bd15eb2db98f340573f318c67732be8cdee.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\u2b4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2b4.0.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\GIECFIEGDB.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1136
  - - C:\Users\Admin\AppData\Local\Temp\GIECFIEGDB.exe
      "C:\Users\Admin\AppData\Local\Temp\GIECFIEGDB.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3076
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\GIECFIEGDB.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2156
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:3344
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4920 -s 2464
    3⤵
    - Program crash
    PID:1832
- C:\Users\Admin\AppData\Local\Temp\u2b4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2b4.1.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:428
- - 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:2376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4920 -ip 4920
1⤵
PID:2336

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

Remote System Discovery

T1018

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\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\GIECFIEGDB.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

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

Filesize
3KB

MD5
fd89cb810f7b9d0092a839cb9390d181

SHA1
56d7c129af008dce03da224d92208998dd61a6aa

SHA256
033c84059ba15ba49832905742756a658547ac0cda57eda349943121b80fc58c

SHA512
1f295c468611458d13595175e7d551b0cf412da1ab8ffbf3f3c8945a8d311b68e776afd0c4ddfea8e432e897af3d589647b83c8aacb771251f337b2700f74a97

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2b4.0.exe

Filesize
304KB

MD5
2681b964cd392cfe849313d7f9d14e47

SHA1
97ca171e8e0400a91f4996a70ca325682000c69f

SHA256
5df2b87d2193bfa3528796eb4f32c487eb871f6be11412e3c808a5771a42b18f

SHA512
66241e6112205cb4497539cc3668ba5a2b818712dccb2121ac017c9dbf6f565f513193f215bd3d8f2e4969c22e2a1f83f1df0c12b256516e837f594050ef6ea5

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2b4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/428-28-0x0000000002550000-0x0000000002551000-memory.dmp

Filesize
4KB

Download
memory/428-136-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/428-124-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2376-149-0x0000024132170000-0x00000241321EA000-memory.dmp

Filesize
488KB

Download
memory/2376-156-0x0000024132350000-0x0000024132650000-memory.dmp

Filesize
3.0MB

Download
memory/2376-207-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-206-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-205-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-204-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-203-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-197-0x00007FFD284A0000-0x00007FFD28F61000-memory.dmp

Filesize
10.8MB

Download
memory/2376-173-0x0000024137610000-0x000002413762E000-memory.dmp

Filesize
120KB

Download
memory/2376-137-0x00007FFD284A0000-0x00007FFD28F61000-memory.dmp

Filesize
10.8MB

Download
memory/2376-138-0x0000024112EA0000-0x0000024116798000-memory.dmp

Filesize
57.0MB

Download
memory/2376-172-0x00000241375E0000-0x0000024137602000-memory.dmp

Filesize
136KB

Download
memory/2376-140-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-141-0x0000024131D50000-0x0000024131E60000-memory.dmp

Filesize
1.1MB

Download
memory/2376-142-0x0000024116BF0000-0x0000024116C00000-memory.dmp

Filesize
64KB

Download
memory/2376-143-0x0000024118410000-0x000002411841C000-memory.dmp

Filesize
48KB

Download
memory/2376-144-0x00000241183E0000-0x00000241183F4000-memory.dmp

Filesize
80KB

Download
memory/2376-145-0x0000024118420000-0x0000024118444000-memory.dmp

Filesize
144KB

Download
memory/2376-146-0x0000024118440000-0x000002411844A000-memory.dmp

Filesize
40KB

Download
memory/2376-148-0x00000241320C0000-0x0000024132172000-memory.dmp

Filesize
712KB

Download
memory/2376-147-0x0000024131C10000-0x0000024131C3A000-memory.dmp

Filesize
168KB

Download
memory/2376-171-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-151-0x00000241322D0000-0x0000024132346000-memory.dmp

Filesize
472KB

Download
memory/2376-150-0x00000241321F0000-0x0000024132252000-memory.dmp

Filesize
392KB

Download
memory/2376-152-0x00000241185C0000-0x00000241185CA000-memory.dmp

Filesize
40KB

Download
memory/2376-170-0x0000024137540000-0x000002413754C000-memory.dmp

Filesize
48KB

Download
memory/2376-160-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-161-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-159-0x0000024135FB0000-0x0000024135FB8000-memory.dmp

Filesize
32KB

Download
memory/2376-158-0x0000024131C40000-0x0000024131C50000-memory.dmp

Filesize
64KB

Download
memory/2376-162-0x00000241366B0000-0x00000241366E8000-memory.dmp

Filesize
224KB

Download
memory/2376-163-0x0000024136680000-0x000002413668E000-memory.dmp

Filesize
56KB

Download
memory/2376-164-0x00000241377C0000-0x00000241377CA000-memory.dmp

Filesize
40KB

Download
memory/2376-165-0x00000241377D0000-0x00000241377F2000-memory.dmp

Filesize
136KB

Download
memory/2376-166-0x0000024137D20000-0x0000024138248000-memory.dmp

Filesize
5.2MB

Download
memory/2376-169-0x0000024137590000-0x00000241375E0000-memory.dmp

Filesize
320KB

Download
memory/2992-27-0x0000000000570000-0x00000000005DC000-memory.dmp

Filesize
432KB

Download
memory/2992-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2992-26-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download
memory/2992-3-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download
memory/2992-2-0x0000000000570000-0x00000000005DC000-memory.dmp

Filesize
432KB

Download
memory/3076-198-0x0000000005340000-0x0000000005350000-memory.dmp

Filesize
64KB

Download
memory/3076-196-0x0000000072580000-0x0000000072D30000-memory.dmp

Filesize
7.7MB

Download
memory/3076-195-0x0000000000A30000-0x0000000000A50000-memory.dmp

Filesize
128KB

Download
memory/3076-201-0x0000000072580000-0x0000000072D30000-memory.dmp

Filesize
7.7MB

Download
memory/4920-13-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4920-202-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

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memory/4920-14-0x00000000007B0000-0x00000000007D7000-memory.dmp

Filesize
156KB

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memory/4920-123-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

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memory/4920-15-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

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memory/4920-139-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

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memory/4920-33-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

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