a4d3d1702df4d3910c0235627d548b28e52b1ea244e43e4b5e5d5911e99e8b5c

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/05/2024, 18:25

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General

Target

2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe
Size

43KB
MD5

50662dab55b0c1f8ea26da63dab254f0
SHA1

6b4a0e7330447181cc7fd855682a78306dbcb9d2
SHA256

a4d3d1702df4d3910c0235627d548b28e52b1ea244e43e4b5e5d5911e99e8b5c
SHA512

4ed7e1c7159e1988c29943df38c373d5c4be3cc31f575d71bd1306237472876107c5a169243877771bc6e5473aa73e805c5f71687ec3b112635639fbc3984b04
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8uYo0nrlwfjDUOR:bm74zYcgT/Ek70ryfjxR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1948-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000013a06-11.dat	CryptoLocker_rule2
behavioral1/memory/1624-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1948-15-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1624-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1624	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1948	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_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 1948 wrote to memory of 1624	1948	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	28
PID 1948 wrote to memory of 1624	1948	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	28
PID 1948 wrote to memory of 1624	1948	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	28
PID 1948 wrote to memory of 1624	1948	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1624

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\hasfj.exe

Filesize
43KB

MD5
93ffc321249d225a34832e671c44ec71

SHA1
2661f146c6c8d7541db7d41d95d88b75ee1323cb

SHA256
46ebfe5071fac6ec20e07886f6f0f80ebe117c73d26812fec1452aa2c2e3bd45

SHA512
1ce5ddadf78b3388671b91032943adffca5d2a5a1a699d73e20cb4d0155c9cb2af14f9ccd2a6675e562567419e0c8b445e51749aea5980ddc97b20260f3522f2

Download Submit
memory/1624-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1624-25-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1624-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1624-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1948-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1948-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1948-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1948-9-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1948-15-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download