332361a6e1e244caadfaca68b60c6962085411cff293188b4acdf792a42f6360

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/04/2024, 20:35

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General

Target

inbox/100000155507629@msgr_1/messages.json
Size

4KB
MD5

f1d32851f69a1c105e157dd9fb192c10
SHA1

89549bd07d1a6abf0d0587d18f80db04c4af15d9
SHA256

c36caccf1b6296f8c8d6428ac77ab2c3b255e4a6293b3f3a3b4b56006f5ab2ed
SHA512

a7747499e25d20fd10ecd017d3f78acc67d67992f852e2d13a5f6356fbaa1c1be19197ffb14b82a35119e64e81e45ef1e45bbe3907260b23b90bc9bd88ad3083
SSDEEP

96:9GoSZcGvZkGvZkSGvZSGoSZFGoSZIGGvZDGoSZ3SGvZbGoSZgGvZSGvZvbjGoSZX:n4xZJZGZA4f4IbZt4XZV4lZHZp414CHV

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-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.json	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_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-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2824	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2824	AcroRd32.exe
2824	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2700	2124	cmd.exe	29
PID 2124 wrote to memory of 2700	2124	cmd.exe	29
PID 2124 wrote to memory of 2700	2124	cmd.exe	29
PID 2700 wrote to memory of 2824	2700	rundll32.exe	30
PID 2700 wrote to memory of 2824	2700	rundll32.exe	30
PID 2700 wrote to memory of 2824	2700	rundll32.exe	30
PID 2700 wrote to memory of 2824	2700	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\inbox\100000155507629@msgr_1\messages.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\inbox\100000155507629@msgr_1\messages.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2700
- - 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\inbox\100000155507629@msgr_1\messages.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2824

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
89ae38654ceec70ed98878e730239a71

SHA1
9fb51beb022c74ab071c400f9ac24a1c08401eda

SHA256
2f952b23d47156e98a65e90e539393fbcee25650751541215ff56fad4d57c882

SHA512
cea59a1edff9f38f91f17349e33f7197ea2a29e5627451c89d2b35b7664d7fc5443156f6c51da8f9d36cc7fe73896a166b284c2ac91cdf8ae0c952d3e5d4c0c3

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