0774ee18a57ee8a20d7f355f23a6b7f049dd93c251e2cc9af0100e92a3526547

Resubmissions

04/04/2024, 10:25

240404-mf9csada3910

04/04/2024, 10:18

02/04/2024, 03:00

02/04/2024, 03:00

02/04/2024, 02:52

31/05/2022, 01:49

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
02/04/2024, 03:00

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General

Target
confidence.fjo
Size 817KB
Sample240402-dhm3wsfb76
SHA256 5417189eaaca907f7254e73a7dbffde4a4ecf801688017d8c51aa751d6daaf29
MD5 897ed284bff11dcf413a39c2ff1da470
SHA1 89f20ca6f437ab72b3427297e8efa3a658775dd5
SHA512 73042c1eac9c29fa9854a9628fe5e798f4bb81ee30030245ccd198470d96119b2d52c680f9e5c3ab6cc8ba0cc60cf0ae8c9319692c0bb9bae8cdab678b62a7c7
SSDEEP 24576:Pmjin/vxIYUjjE0mDpFA6rpVtuNSdi6Hyh:Cin/OfY0mDpFA6r/umBHyh
MD5 SHA1 SHA512 SSDEEP

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
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.fjo	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.fjo\ = "fjo_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\fjo_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2484	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2484	AcroRd32.exe
2484	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 2564	1844	cmd.exe	29
PID 1844 wrote to memory of 2564	1844	cmd.exe	29
PID 1844 wrote to memory of 2564	1844	cmd.exe	29
PID 2564 wrote to memory of 2484	2564	rundll32.exe	30
PID 2564 wrote to memory of 2484	2564	rundll32.exe	30
PID 2564 wrote to memory of 2484	2564	rundll32.exe	30
PID 2564 wrote to memory of 2484	2564	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\confidence.fjo
1⤵
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\confidence.fjo
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2564
- - 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\confidence.fjo"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2484

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

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 417655f1bdbf91c3a68bda8c0fdfa5dde69c443de2407620ce946a3687f6f5f3
MD5 19e3f7351132f204a9989b336ae00a04
SHA1 4dea5ecc2c0765602679210e1f7f4dccc2201464
SHA512 77622412fb640b1fc3fcd3f071e3e4df647391b3b07d68acce31b4278fae295f8678e31ce68349d942b958c0e73d7f451718827515cdec221327b2bafb57f1e9
MD5 SHA1 SHA512

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