stealc | 4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e

Analysis

max time kernel
133s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 16:00

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General

Target

4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe
Size

373KB
MD5

40a87476693c716e87906d6ebe332bee
SHA1

cd1956e7b3ecc089de9e8b2bcfb3d26444353d68
SHA256

4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e
SHA512

59e09655b573e534bfa1b5947324228520cf48b94d5a47ab8cfd809b3ad5fa3b65b5c50b6efe9e3b408e03b7c00ab87fda916714d0a1f01a0d08f51e893aa8d5
SSDEEP

6144:rTePZlPmlhKy8Z7Hejcr9mg7OWB2GhXJdv4Ub88F3YXCfYvPoyogzTxvV:rTePHIhKbDrdvfQ8RmCgvloUtV

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/1260-147-0x000002246BD80000-0x000002246F5B4000-memory.dmp	family_zgrat_v1
behavioral1/memory/1260-148-0x0000022472CB0000-0x0000022472DBA000-memory.dmp	family_zgrat_v1
behavioral1/memory/1260-152-0x0000022471C40000-0x0000022471C64000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	u1jg.1.exe

Executes dropped EXE 2 IoCs

pid	Process
900	u1jg.0.exe
3872	u1jg.1.exe

Loads dropped DLL 2 IoCs

pid	Process
900	u1jg.0.exe
900	u1jg.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
1512	1996	WerFault.exe	88
1420	900	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	u1jg.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1jg.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1jg.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	u1jg.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1jg.0.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
900	u1jg.0.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1260	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe
3872	u1jg.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 900	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	96
PID 1996 wrote to memory of 900	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	96
PID 1996 wrote to memory of 900	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	96
PID 1996 wrote to memory of 3872	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	101
PID 1996 wrote to memory of 3872	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	101
PID 1996 wrote to memory of 3872	1996	4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe	101
PID 3872 wrote to memory of 1260	3872	u1jg.1.exe	107
PID 3872 wrote to memory of 1260	3872	u1jg.1.exe	107

C:\Users\Admin\AppData\Local\Temp\4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe
"C:\Users\Admin\AppData\Local\Temp\4b36b661d64f099880ad4d09daba7508b4d13684ba360b376fb58a39ee606e1e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\u1jg.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1jg.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:900
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 900 -s 2024
    3⤵
    - Program crash
    PID:1420
- C:\Users\Admin\AppData\Local\Temp\u1jg.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1jg.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:3872
- - 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:1260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 1248
  2⤵
  - Program crash
  PID:1512

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=4184,i,9746875443948590908,1444894342962555245,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:3104

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=2972,i,9746875443948590908,1444894342962555245,262144 --variations-seed-version --mojo-platform-channel-handle=4200 /prefetch:3
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1996 -ip 1996
1⤵
PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 900 -ip 900
1⤵
PID:3224

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\u1jg.0.exe

Filesize
231KB

MD5
7ef8dd4292b7d2ece55b9db53d22ed30

SHA1
6d9316eccdc762e694ebb2950057ddb672a80953

SHA256
f9ad11b6e4e476c6322766fad52633e3d7419ba96b74899188c26b5b669ff18b

SHA512
5f154d79b1df078c95529a48c478771fae9330d47f8abc73a7e68978718fef3793904f3830621d53dc68b86dae53a540bc809da24495696ae5304d91350fa80c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1jg.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/900-15-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/900-17-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/900-18-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/900-16-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/900-112-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/900-191-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/1260-148-0x0000022472CB0000-0x0000022472DBA000-memory.dmp

Filesize
1.0MB

Download
memory/1260-168-0x0000022478290000-0x000002247829A000-memory.dmp

Filesize
40KB

Download
memory/1260-176-0x00000224785F0000-0x000002247860E000-memory.dmp

Filesize
120KB

Download
memory/1260-175-0x0000022478690000-0x0000022478706000-memory.dmp

Filesize
472KB

Download
memory/1260-174-0x00000224782B0000-0x00000224782BC000-memory.dmp

Filesize
48KB

Download
memory/1260-171-0x0000022478AF0000-0x0000022479018000-memory.dmp

Filesize
5.2MB

Download
memory/1260-170-0x00000224785A0000-0x00000224785C2000-memory.dmp

Filesize
136KB

Download
memory/1260-169-0x0000022478540000-0x00000224785A2000-memory.dmp

Filesize
392KB

Download
memory/1260-147-0x000002246BD80000-0x000002246F5B4000-memory.dmp

Filesize
56.2MB

Download
memory/1260-167-0x00000224773A0000-0x00000224773A8000-memory.dmp

Filesize
32KB

Download
memory/1260-149-0x000002246F9A0000-0x000002246F9B0000-memory.dmp

Filesize
64KB

Download
memory/1260-150-0x0000022471BF0000-0x0000022471BFC000-memory.dmp

Filesize
48KB

Download
memory/1260-151-0x000002246FA30000-0x000002246FA44000-memory.dmp

Filesize
80KB

Download
memory/1260-152-0x0000022471C40000-0x0000022471C64000-memory.dmp

Filesize
144KB

Download
memory/1260-153-0x0000022471C60000-0x0000022471C6A000-memory.dmp

Filesize
40KB

Download
memory/1260-154-0x0000022472F00000-0x0000022472F2A000-memory.dmp

Filesize
168KB

Download
memory/1260-155-0x0000022472F30000-0x0000022472FE2000-memory.dmp

Filesize
712KB

Download
memory/1260-156-0x0000022473030000-0x0000022473080000-memory.dmp

Filesize
320KB

Download
memory/1260-157-0x0000022473080000-0x00000224730A2000-memory.dmp

Filesize
136KB

Download
memory/1260-158-0x0000022471C70000-0x0000022471C7A000-memory.dmp

Filesize
40KB

Download
memory/1260-162-0x00000224730B0000-0x00000224733B0000-memory.dmp

Filesize
3.0MB

Download
memory/1260-164-0x0000022477430000-0x0000022477438000-memory.dmp

Filesize
32KB

Download
memory/1260-165-0x00000224773B0000-0x00000224773E8000-memory.dmp

Filesize
224KB

Download
memory/1260-166-0x0000022477380000-0x000002247738E000-memory.dmp

Filesize
56KB

Download
memory/1996-1-0x00000000025C0000-0x00000000026C0000-memory.dmp

Filesize
1024KB

Download
memory/1996-88-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1996-13-0x0000000000400000-0x0000000002599000-memory.dmp

Filesize
33.6MB

Download
memory/1996-14-0x00000000025C0000-0x00000000026C0000-memory.dmp

Filesize
1024KB

Download
memory/1996-77-0x0000000000400000-0x0000000002599000-memory.dmp

Filesize
33.6MB

Download
memory/1996-87-0x00000000041F0000-0x000000000425C000-memory.dmp

Filesize
432KB

Download
memory/1996-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1996-2-0x00000000041F0000-0x000000000425C000-memory.dmp

Filesize
432KB

Download
memory/3872-145-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3872-133-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download