4d8daf45a5fcf7480739974e1d9ecac7370462f66196dd14b9a38020120dc202

Resubmissions

02-06-2024 23:20

240602-3bvxlaag6v 7

02-06-2024 23:16

240602-29dwasbg87 4

Analysis

max time kernel
121s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 23:16

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General

Target

icudtl.dat
Size

10.1MB
MD5

2134e5dbc46fb1c46eac0fe1af710ec3
SHA1

dbecf2d193ae575aba4217194d4136bd9291d4db
SHA256

ee3c8883effd90edfb0ff5b758c560cbca25d1598fcb55b80ef67e990dd19d41
SHA512

b9b50614d9baebf6378e5164d70be7fe7ef3051cfff38733fe3c7448c5de292754bbbb8da833e26115a185945be419be8dd1030fc230ed69f388479853bc0fcb
SSDEEP

98304:GKPBQYOo+ddlymOk25flQCUliXUxiG9Ha93Whla6ZGdnp/8j:GKPBhORjOhCliXUxiG9Ha93Whla6ZGr4

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2556	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2556	AcroRd32.exe
2556	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2588	3056	cmd.exe	29
PID 3056 wrote to memory of 2588	3056	cmd.exe	29
PID 3056 wrote to memory of 2588	3056	cmd.exe	29
PID 2588 wrote to memory of 2556	2588	rundll32.exe	30
PID 2588 wrote to memory of 2556	2588	rundll32.exe	30
PID 2588 wrote to memory of 2556	2588	rundll32.exe	30
PID 2588 wrote to memory of 2556	2588	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\icudtl.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\icudtl.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2588
- - 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\icudtl.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2556

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
5827a3ea85cf59f0222ab28de05869b2

SHA1
91879151affb0d0f13bd7aeb52c2301d7385f1c5

SHA256
c3b5157e175f80d13c287fd34c264821b15ba741c4108b321964116a1c120f24

SHA512
654cad9ac64a3eeec2a23cded4cee6161b97a0c233034464fd351967246a870b426aa2d3a283fb2f23ca1629278b6841af35e887be53088aa17a4856e3696262

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