8b29e5a5edb9c089f074c1cf490e6dda07d3e6517311195d4f174b0c0e24c90e

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 03:30

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General

Target

2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe
Size

47KB
MD5

321b3d1f36ff41b56b327a01b827cfa0
SHA1

eb2b79236d2a95550672a1330b9026ef0ad6a0bb
SHA256

8b29e5a5edb9c089f074c1cf490e6dda07d3e6517311195d4f174b0c0e24c90e
SHA512

1336a3cf82e92289ee8f85350d0a9abf1ab3a09300d682130f3677bab1b1bd9f8f9b6b1caedb7a921319f4a105d628781060eabbdda21ddd7a4d4b350ad3c5b5
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcj:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1972-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015f01-11.dat	CryptoLocker_rule2
behavioral1/memory/1972-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1972-14-0x0000000002840000-0x000000000284B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2212-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2212-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/1972-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000015f01-11.dat	CryptoLocker_set1
behavioral1/memory/1972-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1972-14-0x0000000002840000-0x000000000284B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2212-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2212-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2212	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_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 1972 wrote to memory of 2212	1972	2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe	28
PID 1972 wrote to memory of 2212	1972	2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_321b3d1f36ff41b56b327a01b827cfa0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2212

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
47KB

MD5
9b415793a53a17363a4f706fd2910b33

SHA1
8d83a9fa034b07bd7b3621665c3e7f77d1f49c1c

SHA256
4f1bf20ae3330915e79a57260b4cae5a0a1a6543dba830e0f0335a9afe241061

SHA512
c757f66c2fa02afbbec9ff15d9ac357e9557c921813cdeb4a2c854e5ff9ca5c1ecfd62fc8c76624fbfc47a801cd0f921025eea7a4d1be108b46a4ddf743beebf

Download Submit
memory/1972-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1972-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1972-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1972-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1972-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1972-14-0x0000000002840000-0x000000000284B000-memory.dmp

Filesize
44KB

Download
memory/2212-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2212-20-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2212-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2212-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download