ffe3a273625fcccf067e79286f8c7480201500fd264696a18d9e48636ae46cc8

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
09/03/2024, 01:34

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General

Target

2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe
Size

98KB
MD5

46acf749ff2aa77eba17d72fc4c4e439
SHA1

ddf1bd6d5977e1613d714cfe58311c32cf39cd19
SHA256

ffe3a273625fcccf067e79286f8c7480201500fd264696a18d9e48636ae46cc8
SHA512

5a97297d82242a80765dc06e1621cd8729faa3f311754663f5fca62ced21102f0671c3f0fc00b4298a2e2737e7d4646600538ed987f9ca35a3f53a619e70a4a2
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuvQpdg:zCsanOtEvwDpjj

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2952-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012251-15.dat	CryptoLocker_rule2
behavioral1/memory/2952-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2952-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012251-15.dat	CryptoLocker_set1
behavioral1/memory/2952-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2952-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012251-15.dat	UPX
behavioral1/memory/2952-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2156	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2952	2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2952-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012251-15.dat	upx
behavioral1/memory/2952-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2952 wrote to memory of 2156	2952	2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe	28
PID 2952 wrote to memory of 2156	2952	2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe	28
PID 2952 wrote to memory of 2156	2952	2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe	28
PID 2952 wrote to memory of 2156	2952	2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_46acf749ff2aa77eba17d72fc4c4e439_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2156

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

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
98KB

MD5
78b536a4cd04b5c8f02d8e52b112557e

SHA1
1260acea5dcb2e89e03af2044e9e21969292c25d

SHA256
0f55fe4fb7c4ac4a5fe178ea8872fdf9de87263adae8a1158dc2e22caccab37e

SHA512
7b12490324dd56aee335319c32e8d66aabae3eaf66c4abcaa8496cc009a57a870b28b203f30dfaf6cfd9270299cc027e3711ec29b40be3f77d249d9b91fec49c

Download Submit
memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2156-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2156-20-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2952-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2952-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2952-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download