0690d15bacf8953fd9e62880a4056b29445057ebb8e8f034b3e598ddd0f19cc8

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
18/07/2023, 13:20

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General

Target

b617067aefa43a_JC.exe
Size

288KB
MD5

b617067aefa43a03bd7890dc4c0213b1
SHA1

541c957b3cb682633f62f3fe29f7769eb5e72383
SHA256

0690d15bacf8953fd9e62880a4056b29445057ebb8e8f034b3e598ddd0f19cc8
SHA512

5c26ef70a74253879818aad646579453367cdf11709107e04e1f5409070d8d71fd3d14978a4846c2384223aa4bb897f4c1d364c61cece60f05091896bb07b14a
SSDEEP

6144:dQ+Tyfx4NF67Sbq2nW82X45gc3BaLZVS0mOoC8zbzDie:dQMyfmNFHfnWfhLZVHmOog

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 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-1-5-21-1722984668-1829624581-3022101259-1000\Control Panel\International\Geo\Nation	b617067aefa43a_JC.exe

Executes dropped EXE 2 IoCs

pid	Process
3612	dwmsys.exe
1888	dwmsys.exe

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

System Information Discovery
T1082

Modifies registry class 30 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Posix\\dwmsys.exe\" /START \"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\Local Settings	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\DefaultIcon\ = "%1"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\open	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\Content-Type = "application/x-msdownload"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\runas	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\ = "Application"	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\Content-Type = "application/x-msdownload"	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\runas\command\IsolatedCommand = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\runas\command	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\open\command	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\runas\command\IsolatedCommand = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Posix\\dwmsys.exe\" /START \"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\runas	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\runas\command\ = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\open	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\DefaultIcon	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\runas\command\ = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\open\command\IsolatedCommand = "\"%1\" %*"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\DefaultIcon\ = "%1"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\shell\runas\command	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\systemui\shell\open\command	b617067aefa43a_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\ = "systemui"	b617067aefa43a_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000_Classes\.exe\DefaultIcon	b617067aefa43a_JC.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3612	dwmsys.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 3612	2996	b617067aefa43a_JC.exe	85
PID 2996 wrote to memory of 3612	2996	b617067aefa43a_JC.exe	85
PID 2996 wrote to memory of 3612	2996	b617067aefa43a_JC.exe	85
PID 3612 wrote to memory of 1888	3612	dwmsys.exe	86
PID 3612 wrote to memory of 1888	3612	dwmsys.exe	86
PID 3612 wrote to memory of 1888	3612	dwmsys.exe	86

C:\Users\Admin\AppData\Local\Temp\b617067aefa43a_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b617067aefa43a_JC.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe" /START "C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe"
    3⤵
    - Executes dropped EXE
    PID:1888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\Roaming\Microsoft\Posix\dwmsys.exe

Filesize
288KB

MD5
705b43aef865c1967282f07a64cf66b9

SHA1
af6417325b284edc1dbafa06a7ee74a2cf228281

SHA256
9ccdf1cb250f4258bb1cca9c791b08527c6d46b6d8f603ea796086d6485a994a

SHA512
8eccbf96d386da4143afa5a7b04f87685728064baebcb0bf7e4a44a0f6933a7add8dc7d3e4caff5dfefe9a1f939069f28eb2f245b10abbcd5d013a089937f785

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe

Filesize
288KB

MD5
705b43aef865c1967282f07a64cf66b9

SHA1
af6417325b284edc1dbafa06a7ee74a2cf228281

SHA256
9ccdf1cb250f4258bb1cca9c791b08527c6d46b6d8f603ea796086d6485a994a

SHA512
8eccbf96d386da4143afa5a7b04f87685728064baebcb0bf7e4a44a0f6933a7add8dc7d3e4caff5dfefe9a1f939069f28eb2f245b10abbcd5d013a089937f785

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe

Filesize
288KB

MD5
705b43aef865c1967282f07a64cf66b9

SHA1
af6417325b284edc1dbafa06a7ee74a2cf228281

SHA256
9ccdf1cb250f4258bb1cca9c791b08527c6d46b6d8f603ea796086d6485a994a

SHA512
8eccbf96d386da4143afa5a7b04f87685728064baebcb0bf7e4a44a0f6933a7add8dc7d3e4caff5dfefe9a1f939069f28eb2f245b10abbcd5d013a089937f785

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Posix\dwmsys.exe

Filesize
288KB

MD5
705b43aef865c1967282f07a64cf66b9

SHA1
af6417325b284edc1dbafa06a7ee74a2cf228281

SHA256
9ccdf1cb250f4258bb1cca9c791b08527c6d46b6d8f603ea796086d6485a994a

SHA512
8eccbf96d386da4143afa5a7b04f87685728064baebcb0bf7e4a44a0f6933a7add8dc7d3e4caff5dfefe9a1f939069f28eb2f245b10abbcd5d013a089937f785

Download Submit