46b5907f292a5a9c364b9b140caa3520c13ca392efc19280fc6d971879861062

Analysis

max time kernel
149s
max time network
138s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 02:48

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General

Target

2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe
Size

53KB
MD5

8bec00d0844a59f96075e9055635419a
SHA1

f7da5e3afd05d41de87060065b0b5f07b6f72eeb
SHA256

46b5907f292a5a9c364b9b140caa3520c13ca392efc19280fc6d971879861062
SHA512

9074f5f88ef9c5bd1e039517a283698d95df52fb38e5fbe6cdd36ea4084d7cc55b560fe812c358c8fa090f05cb03e029a6fe4edc4c1846efb2495ab8799df2fa
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyU:BbdDmjr+OtEvwDpjMf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/868-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012302-11.dat	CryptoLocker_rule2
behavioral1/memory/868-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/868-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/868-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012302-11.dat	UPX
behavioral1/memory/868-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3032	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
868	2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 3032	868	2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe	28
PID 868 wrote to memory of 3032	868	2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe	28
PID 868 wrote to memory of 3032	868	2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe	28
PID 868 wrote to memory of 3032	868	2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_8bec00d0844a59f96075e9055635419a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:868
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
53KB

MD5
1cfab3b2f97f4fd60176263f9ab1128d

SHA1
ac9add748330009702b832f206d45361104b3f75

SHA256
5cc5f68ae03fdc24d53a981077b79cec8255b1d432569695cc33b0cf207c910b

SHA512
67ed311fc65f5ab311bf8a04d3c20dc69a38a9e7c631159645393d35eb1c6503ac6f61a904e3249b29f5697ba0071d403ca7dd965ab44b4737a6b770b5c634e1

Download Submit
memory/868-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/868-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/868-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/868-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/868-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/868-16-0x00000000006B0000-0x00000000006C0000-memory.dmp

Filesize
64KB

Download
memory/868-28-0x00000000006B0000-0x00000000006C0000-memory.dmp

Filesize
64KB

Download
memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download