92c5d36caa4eb64a88883aee685d8fa852df8959cd6c8c0fdb9c296e561d0f84

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26/01/2024, 15:38

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General

Target

2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe
Size

43KB
MD5

e5eaf4b9e16e7b297b1e0654f5731fe3
SHA1

547559aa40ea7845a9e6e8867e972c0d242196ec
SHA256

92c5d36caa4eb64a88883aee685d8fa852df8959cd6c8c0fdb9c296e561d0f84
SHA512

d08d3ddcd632e19fcbaf3407f9a706fe1896eb426e0984f88a05e48c5e4e3b1d9561251afb71b7c9ae97f5bcb9b4ed8566280072c0df13979279e030c4f191e8
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLt:79inqyNR/QtOOtEvwDpjBKccJVODvy3w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0007000000012281-11.dat	CryptoLocker_rule2
behavioral1/memory/2044-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2432-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2044-14-0x00000000004E0000-0x00000000004EF000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0007000000012281-11.dat	CryptoLocker_set1
behavioral1/memory/2044-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2432-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2044-14-0x00000000004E0000-0x00000000004EF000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2432	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_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 2044 wrote to memory of 2432	2044	2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe	28
PID 2044 wrote to memory of 2432	2044	2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe	28
PID 2044 wrote to memory of 2432	2044	2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe	28
PID 2044 wrote to memory of 2432	2044	2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_e5eaf4b9e16e7b297b1e0654f5731fe3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2432

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
43KB

MD5
3d688b72c4f5e375fa5cd398b65a9d29

SHA1
594ccc0132940850401ec8a42bcfe809a7cc03f1

SHA256
a1e78d1f79ddc7fb612f98e8ae01597e60f8af26095a13d86db9abab74224b20

SHA512
4774b2bd0ca93accc22246ee8d553d5358205d6f339facc85b22034a31a41a8a68248e2a1b4acc1024f87312c5e464a0e43679f294facd894f87c5f8082f6de9

Download Submit
memory/2044-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2044-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2044-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2044-4-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2044-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2044-14-0x00000000004E0000-0x00000000004EF000-memory.dmp

Filesize
60KB

Download
memory/2432-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2432-19-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2432-22-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download