stealc | f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3

Analysis

max time kernel
125s
max time network
129s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
08-05-2024 15:47

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General

Target

f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe
Size

365KB
MD5

6638ddecbc7828d02bf54e1526931350
SHA1

1fe3bf603e4f7c32936a5d5aa0f515719aaf8782
SHA256

f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3
SHA512

dd8edb894df0994e10d80a45e41e8eeebb80f75dfc27bdb8a58c82d5a2e82c300f0649c028b4a142aecf19ecad7862ce7cfbdf2a06fadd2d82d5313c7ab6a0e9
SSDEEP

6144:0j9PNW6k+7KXF5gUZwnAFpPLr2PXEVT1NjGzG4YqJcbbYTOO6:0j9PA6d7K4UZwQ2Xw1mt+b8OO6

Score

10^/10

stealc zgrat discovery rat 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
behavioral2/memory/2420-66-0x0000022507180000-0x000002250A9B4000-memory.dmp	family_zgrat_v1
behavioral2/memory/2420-67-0x00000225250D0000-0x00000225251DA000-memory.dmp	family_zgrat_v1
behavioral2/memory/2420-71-0x0000022525230000-0x0000022525254000-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
3552	u2d4.0.exe
3868	u2d4.1.exe

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
5100	3064	WerFault.exe	79
3884	3552	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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2d4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2d4.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2d4.1.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	u2d4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2d4.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3552	u2d4.0.exe
3552	u2d4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2420	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe
3868	u2d4.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 3552	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	81
PID 3064 wrote to memory of 3552	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	81
PID 3064 wrote to memory of 3552	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	81
PID 3064 wrote to memory of 3868	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	84
PID 3064 wrote to memory of 3868	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	84
PID 3064 wrote to memory of 3868	3064	f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe	84
PID 3868 wrote to memory of 2420	3868	u2d4.1.exe	90
PID 3868 wrote to memory of 2420	3868	u2d4.1.exe	90

C:\Users\Admin\AppData\Local\Temp\f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe
"C:\Users\Admin\AppData\Local\Temp\f7647c3d4fb2b8f1973aa3f997b9b8caff993f74d7d96510df10675c9c3bdeb3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Local\Temp\u2d4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2d4.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3552
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3552 -s 860
    3⤵
    - Program crash
    PID:3884
- C:\Users\Admin\AppData\Local\Temp\u2d4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2d4.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3868
- - 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:2420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3064 -s 508
  2⤵
  - Program crash
  PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3064 -ip 3064
1⤵
PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3552 -ip 3552
1⤵
PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
41970d9e84f8541d1c125406abe999f9

SHA1
2e81e564ec5f6a5b69d16528d5a4110613b3e37c

SHA256
1840985ca2eacaa670ab9a584efa0b4d619f2e1c2f6afefb36245378a3f0b877

SHA512
6cd295991fb0eb94215d3675981153aed981993ea027cef3f5a18a465f74f1f4acba95775b3ed7971cc273c9859a8c2b5f24c8aafd446d7b2dc4bb22b874e0b8

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

Filesize
3KB

MD5
7c48b3d431c6cb82e24c74e739584143

SHA1
48065144f324c2deba06c9703e7ce144b20260cc

SHA256
b9fb745acfd41df88e65bff07a1e4a4011c36aa97ed5c2b2f62d58e37be5578c

SHA512
beb9dc4822f893a30cdc40e1575636f5a9f22188ca353ca847c7b6e711dc1057c2ff5513c12acd05321593c10d428926b81ed7e7815a539604ec95cad1fdab3a

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2d4.0.exe

Filesize
223KB

MD5
68b1200c9bd2fd38fa959110f99c67ed

SHA1
02a246137a35c03292334466904dc609b04e97e2

SHA256
021d9fa1c537c10c68c08db1d0f77da7240c1268d4dd2985cfece06d2cb78c8f

SHA512
f5ba3d7919cda2095fe3e979d7557a9b40cf84a4612c0aef38030f310dd285650314ccc48e5e80691cba687c7d104921dbd2d90412588dd536f0735e1b6ede39

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2d4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/2420-72-0x00000225253B0000-0x00000225253BA000-memory.dmp

Filesize
40KB

Download
memory/2420-88-0x000002252A2A0000-0x000002252A302000-memory.dmp

Filesize
392KB

Download
memory/2420-75-0x0000022525510000-0x0000022525560000-memory.dmp

Filesize
320KB

Download
memory/2420-96-0x000002252A040000-0x000002252A05E000-memory.dmp

Filesize
120KB

Download
memory/2420-94-0x000002252A0E0000-0x000002252A156000-memory.dmp

Filesize
472KB

Download
memory/2420-93-0x000002252A000000-0x000002252A00C000-memory.dmp

Filesize
48KB

Download
memory/2420-90-0x000002252A850000-0x000002252AD78000-memory.dmp

Filesize
5.2MB

Download
memory/2420-89-0x000002252A300000-0x000002252A322000-memory.dmp

Filesize
136KB

Download
memory/2420-74-0x0000022525410000-0x00000225254C2000-memory.dmp

Filesize
712KB

Download
memory/2420-87-0x000002252A280000-0x000002252A28A000-memory.dmp

Filesize
40KB

Download
memory/2420-66-0x0000022507180000-0x000002250A9B4000-memory.dmp

Filesize
56.2MB

Download
memory/2420-67-0x00000225250D0000-0x00000225251DA000-memory.dmp

Filesize
1.0MB

Download
memory/2420-69-0x00000225250B0000-0x00000225250BC000-memory.dmp

Filesize
48KB

Download
memory/2420-68-0x0000022525090000-0x00000225250A0000-memory.dmp

Filesize
64KB

Download
memory/2420-70-0x00000225250A0000-0x00000225250B4000-memory.dmp

Filesize
80KB

Download
memory/2420-71-0x0000022525230000-0x0000022525254000-memory.dmp

Filesize
144KB

Download
memory/2420-86-0x0000022529900000-0x0000022529908000-memory.dmp

Filesize
32KB

Download
memory/2420-73-0x00000225253E0000-0x000002252540A000-memory.dmp

Filesize
168KB

Download
memory/2420-76-0x0000022525560000-0x0000022525582000-memory.dmp

Filesize
136KB

Download
memory/2420-84-0x0000022529910000-0x0000022529948000-memory.dmp

Filesize
224KB

Download
memory/2420-85-0x00000225298E0000-0x00000225298EE000-memory.dmp

Filesize
56KB

Download
memory/2420-77-0x0000022525070000-0x000002252507A000-memory.dmp

Filesize
40KB

Download
memory/2420-81-0x0000022525590000-0x0000022525890000-memory.dmp

Filesize
3.0MB

Download
memory/2420-83-0x0000022529FD0000-0x0000022529FD8000-memory.dmp

Filesize
32KB

Download
memory/3064-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3064-2-0x0000000003750000-0x00000000037BC000-memory.dmp

Filesize
432KB

Download
memory/3064-1-0x0000000001CB0000-0x0000000001DB0000-memory.dmp

Filesize
1024KB

Download
memory/3064-34-0x0000000000400000-0x0000000001A25000-memory.dmp

Filesize
22.1MB

Download
memory/3064-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3552-13-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-103-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-14-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-98-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-101-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-15-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3552-105-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3868-65-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3868-62-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download