stealc | 3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b

Analysis

max time kernel
134s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 12:49

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General

Target

3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe
Size

382KB
MD5

35e110c1676083a1a24f65624c714f5f
SHA1

93b1931633a7676345ecd3df284c3144fc6182bb
SHA256

3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b
SHA512

9902eba36f5f6a64018d5074699ed508f49ee985d5ffa0eff5fb183095b0e4df21772afcd5bca04395d02bd20d82f8a89e7c53d00984d2ff5ba9fd8625ee5ce4
SSDEEP

6144:pjNz2z8NYkmBEv/WgU0wBmhekXHTXEdzE+eJKtv:pjN8WYJOjrutKJKtv

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/4508-68-0x000002ABF9BD0000-0x000002ABFD404000-memory.dmp	family_zgrat_v1
behavioral1/memory/4508-69-0x000002AB9B450000-0x000002AB9B55A000-memory.dmp	family_zgrat_v1
behavioral1/memory/4508-73-0x000002AB9B260000-0x000002AB9B284000-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 3 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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	u2wc.1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	u2wc.0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe

Executes dropped EXE 2 IoCs

pid	Process
2904	u2wc.0.exe
1436	u2wc.1.exe

Loads dropped DLL 2 IoCs

pid	Process
2904	u2wc.0.exe
2904	u2wc.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
3432	3756	WerFault.exe	88
4724	2904	WerFault.exe	96

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	u2wc.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2wc.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2wc.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	u2wc.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2wc.0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2096	timeout.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

pid	Process
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe
2904	u2wc.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe
1436	u2wc.1.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 2904	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	96
PID 3756 wrote to memory of 2904	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	96
PID 3756 wrote to memory of 2904	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	96
PID 3756 wrote to memory of 1436	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	98
PID 3756 wrote to memory of 1436	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	98
PID 3756 wrote to memory of 1436	3756	3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe	98
PID 1436 wrote to memory of 4508	1436	u2wc.1.exe	103
PID 1436 wrote to memory of 4508	1436	u2wc.1.exe	103
PID 2904 wrote to memory of 436	2904	u2wc.0.exe	109
PID 2904 wrote to memory of 436	2904	u2wc.0.exe	109
PID 2904 wrote to memory of 436	2904	u2wc.0.exe	109
PID 436 wrote to memory of 2096	436	cmd.exe	113
PID 436 wrote to memory of 2096	436	cmd.exe	113
PID 436 wrote to memory of 2096	436	cmd.exe	113

C:\Users\Admin\AppData\Local\Temp\3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe
"C:\Users\Admin\AppData\Local\Temp\3e74588c0435af33331d75c5689c6c5480fd253292988009b3c68f8f4c89402b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Users\Admin\AppData\Local\Temp\u2wc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2wc.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:2904
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\u2wc.0.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:436
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:2096
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2904 -s 2332
    3⤵
    - Program crash
    PID:4724
- C:\Users\Admin\AppData\Local\Temp\u2wc.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2wc.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:1436
- - 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:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3756 -s 1016
  2⤵
  - Program crash
  PID:3432

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 --field-trial-handle=4376,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=4032 /prefetch:8
1⤵
PID:3708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3756 -ip 3756
1⤵
PID:4220

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=3004,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=3008 /prefetch:3
1⤵
PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2904 -ip 2904
1⤵
PID:3708

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\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports

Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries

Filesize
40B

MD5
20d4b8fa017a12a108c87f540836e250

SHA1
1ac617fac131262b6d3ce1f52f5907e31d5f6f00

SHA256
6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

SHA512
507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2wc.0.exe

Filesize
217KB

MD5
8b5342b5f6ddbd628daff749e1246f13

SHA1
ca33cb27fd6e392d59883624153be0189eb1da42

SHA256
b8385942051378830680520bf47b8fc382e2d22b4153e7f3bb0b191963241a33

SHA512
5f87d48017a9db6a72f75fe1490b645449ba5e9aa290385db7f13d0b629a88aef012565444c82c89a3bfac740b32d5a09c7c1bfe9601d3a1ba9f410e398293c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2wc.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1436-67-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1436-53-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2904-150-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/2904-54-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/2904-188-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/2904-102-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2904-97-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3756-33-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3756-2-0x0000000004770000-0x00000000047DC000-memory.dmp

Filesize
432KB

Download
memory/3756-16-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/3756-1-0x0000000002B60000-0x0000000002C60000-memory.dmp

Filesize
1024KB

Download
memory/3756-32-0x0000000000400000-0x0000000002B1D000-memory.dmp

Filesize
39.1MB

Download
memory/3756-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4508-79-0x000002AB9B2A0000-0x000002AB9B2AA000-memory.dmp

Filesize
40KB

Download
memory/4508-92-0x000002ABA1180000-0x000002ABA16A8000-memory.dmp

Filesize
5.2MB

Download
memory/4508-77-0x000002ABFD770000-0x000002ABFD7C0000-memory.dmp

Filesize
320KB

Download
memory/4508-83-0x000002AB9B750000-0x000002AB9BA50000-memory.dmp

Filesize
3.0MB

Download
memory/4508-85-0x000002ABFD480000-0x000002ABFD488000-memory.dmp

Filesize
32KB

Download
memory/4508-87-0x000002ABFD720000-0x000002ABFD72E000-memory.dmp

Filesize
56KB

Download
memory/4508-86-0x000002ABFD830000-0x000002ABFD868000-memory.dmp

Filesize
224KB

Download
memory/4508-88-0x000002ABFD730000-0x000002ABFD738000-memory.dmp

Filesize
32KB

Download
memory/4508-89-0x000002AB9FAF0000-0x000002AB9FAFA000-memory.dmp

Filesize
40KB

Download
memory/4508-90-0x000002ABA0BF0000-0x000002ABA0C52000-memory.dmp

Filesize
392KB

Download
memory/4508-91-0x000002AB9FB00000-0x000002AB9FB22000-memory.dmp

Filesize
136KB

Download
memory/4508-78-0x000002ABFD7C0000-0x000002ABFD7E2000-memory.dmp

Filesize
136KB

Download
memory/4508-95-0x000002AB9FB20000-0x000002AB9FB2C000-memory.dmp

Filesize
48KB

Download
memory/4508-96-0x000002ABFD8F0000-0x000002ABFD966000-memory.dmp

Filesize
472KB

Download
memory/4508-76-0x000002AB9B6A0000-0x000002AB9B752000-memory.dmp

Filesize
712KB

Download
memory/4508-98-0x000002ABFD7F0000-0x000002ABFD80E000-memory.dmp

Filesize
120KB

Download
memory/4508-75-0x000002AB9B2B0000-0x000002AB9B2DA000-memory.dmp

Filesize
168KB

Download
memory/4508-74-0x000002AB9B290000-0x000002AB9B29A000-memory.dmp

Filesize
40KB

Download
memory/4508-73-0x000002AB9B260000-0x000002AB9B284000-memory.dmp

Filesize
144KB

Download
memory/4508-72-0x000002AB81A90000-0x000002AB81AA4000-memory.dmp

Filesize
80KB

Download
memory/4508-71-0x000002AB9B200000-0x000002AB9B20C000-memory.dmp

Filesize
48KB

Download
memory/4508-70-0x000002AB818B0000-0x000002AB818C0000-memory.dmp

Filesize
64KB

Download
memory/4508-69-0x000002AB9B450000-0x000002AB9B55A000-memory.dmp

Filesize
1.0MB

Download
memory/4508-68-0x000002ABF9BD0000-0x000002ABFD404000-memory.dmp

Filesize
56.2MB

Download