2a64c064af3b4570c916c320e34f2198c82b3278aa31e8a1add59501d97baf9e

Analysis

max time kernel
102s
max time network
18s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
12-07-2024 15:03

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General

Target

Nexus Checker/config.json
Size

44B
MD5

1332014499b6149f2e77aaa675aa655e
SHA1

d5c5ff8279ead1053c49aa8b9e01c7da6c9f7d1a
SHA256

aa5c79f55be176639b2cf268aa24053408f9c57771f1213a0e2d2a56506aa855
SHA512

a5446a979851033c5e6fe17209fdfbabb2fa6bd60d9d21fb178a740d1043a5e7dc842ccd6eb0d1917382d13870172ca7098889af15b6bb7fd7f1e429744f3d1d

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2828	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2828	AcroRd32.exe
2828	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 3044	2488	cmd.exe	30
PID 2488 wrote to memory of 3044	2488	cmd.exe	30
PID 2488 wrote to memory of 3044	2488	cmd.exe	30
PID 3044 wrote to memory of 2828	3044	rundll32.exe	31
PID 3044 wrote to memory of 2828	3044	rundll32.exe	31
PID 3044 wrote to memory of 2828	3044	rundll32.exe	31
PID 3044 wrote to memory of 2828	3044	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Nexus Checker\config.json"
1⤵
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Nexus Checker\config.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Nexus Checker\config.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
540991d51b966054e5d177cc4f6abcda

SHA1
ebff4a9bd2518c877fe1a14b4b764518bab6ed9e

SHA256
356168a68072d66f8960e52276eed8ee341ab04b360341d550b811a14f6da092

SHA512
d96167dad963dc4e134da9ca75dd6faa70d8d8db0bce3f3710a31030f69c9c5e31af8f85e06f20d8494bd3263683991ea2019d50257df653968743ccd4ed6b0e

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