565e3abc2f08e6231bb981c366fccfe42796b6ff530bdc66d1aaa5f7e23b05f0

Analysis

max time kernel
151s
max time network
125s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
06/11/2023, 10:31

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General

Target

Expensive-2.0/natives/jemalloc.dll.sha1
Size

42B
MD5

c75adb723dc1e8da6882e971de1a409b
SHA1

47b93ba6ff7003387791188c2c4dda71c18c4c1e
SHA256

05c0fb73b71476c9885baf76fcbf1e9d6ca70d7eee6218145f86152e422581f9
SHA512

b19d170f058959090c4ac59f2d18d8a45ab929d8a9008aebca97be82af9abeb75c78d335b61f598d44510d6d7d121ae4e97defd60bc98b0a5d67584496910807

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-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.sha1\ = "sha1_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.sha1	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\sha1_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2820	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2820	AcroRd32.exe
2820	AcroRd32.exe
2820	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 1228	2484	cmd.exe	29
PID 2484 wrote to memory of 1228	2484	cmd.exe	29
PID 2484 wrote to memory of 1228	2484	cmd.exe	29
PID 1228 wrote to memory of 2820	1228	rundll32.exe	30
PID 1228 wrote to memory of 2820	1228	rundll32.exe	30
PID 1228 wrote to memory of 2820	1228	rundll32.exe	30
PID 1228 wrote to memory of 2820	1228	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Expensive-2.0\natives\jemalloc.dll.sha1
1⤵
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Expensive-2.0\natives\jemalloc.dll.sha1
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1228
- - 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\Expensive-2.0\natives\jemalloc.dll.sha1"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2820

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
2b60419a4d5b15fb49d3b4da05bf86f9

SHA1
e22256d57edeed917e1bf01ddecf83e3f2986238

SHA256
9df058a44adef8c83fb77395fe12aef3f7e42ff8aec8026927ce9f489409b968

SHA512
a517e51b6590f8b83ed9d8d11fd9e82d3cd4ad6c59532f5b1041b309aa1ba19b15747a03bb85b18e5396c7b0c6787fda2ef4c67701c6efd5490951f80c22c26f

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