b7c4ff4b8fca48c2258723c9442f63bccd1f2aa072b629bb4de6338baa1c1a84

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 19:38

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General

Target

2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe
Size

70KB
MD5

5eb4183b4341b6f34433ea0d925f2e31
SHA1

66b89ebbe530268ce5264c04df1cf307d1824623
SHA256

b7c4ff4b8fca48c2258723c9442f63bccd1f2aa072b629bb4de6338baa1c1a84
SHA512

73c78637901613cc356ba33964c0f27d8bdcc665fd3dcbf7135b18258f7c4d33ee7ffdafe7e4f9667e83b6f63f1cde7b64df327a709506b8a6c3598ef0bcc9e3
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOX:DW60sllyWOtEvwDpjwF85g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012262-11.dat	CryptoLocker_rule2
behavioral1/memory/2456-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012262-11.dat	CryptoLocker_set1
behavioral1/memory/2456-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2520-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2520	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_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 2456 wrote to memory of 2520	2456	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	28
PID 2456 wrote to memory of 2520	2456	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	28
PID 2456 wrote to memory of 2520	2456	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	28
PID 2456 wrote to memory of 2520	2456	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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
70KB

MD5
24544b5a3c713a3121dd5b386bef606f

SHA1
7705332fa6fbc0ef14fbcafbf3ec0316e939a340

SHA256
e1dd667c5a4311572dc0a60b88af30493d380bc4ae270f95f8a9249c419bb8a9

SHA512
901d6f03e662e11500047aa6b52fba171de9521398a384f402d6fe8fdb1503527d7a23b8e63f631564fb4ff4c80444c5cd04c8eddbb4ebc0e4fb1e36426a2b4c

Download Submit
memory/2456-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2456-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2456-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2456-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2456-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2520-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2520-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2520-18-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download