9589acb43837d64790b1498dace36cb1c548af0cc89ddd483ccd803f3b6cc4cb

General

Target

2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe
Size

40KB
MD5

8165bc49e68efebc75f25764d4890274
SHA1

d26da10a63990c6a7b2d06f7d5a84686d1143f12
SHA256

9589acb43837d64790b1498dace36cb1c548af0cc89ddd483ccd803f3b6cc4cb
SHA512

bb4aadc475112d0f24bac88d2f031b5a36ad0ad03d39c611a3899194d54f4f7f964f9020e64d468543ba1e5fc1efdd73b2d8e938dcbde34156e4f50721436bca
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYlO:qDdFJy3QMOtEvwDpjjWMl7T6O

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/3020-13-0x0000000002320000-0x0000000002330000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1208-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1208-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001228a-11.dat	CryptoLocker_set1
behavioral1/memory/3020-13-0x0000000002320000-0x0000000002330000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1208-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1208-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001228a-11.dat	UPX
behavioral1/memory/3020-13-0x0000000002320000-0x0000000002330000-memory.dmp	UPX
behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1208-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1208-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1208	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3020	2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001228a-11.dat	upx
behavioral1/memory/3020-13-0x0000000002320000-0x0000000002330000-memory.dmp	upx
behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1208-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1208-28-0x0000000000500000-0x0000000000510000-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 3020 wrote to memory of 1208	3020	2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe	28
PID 3020 wrote to memory of 1208	3020	2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe	28
PID 3020 wrote to memory of 1208	3020	2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe	28
PID 3020 wrote to memory of 1208	3020	2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_8165bc49e68efebc75f25764d4890274_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
41KB

MD5
3cb7d70c838f528c80af4f360b0e6be0

SHA1
c8ffc529b987f2bde988f66050928643a57cd596

SHA256
749df8bd218748e8cb31f4f14450de3907085dfa12e9c4fb0f1267705a524deb

SHA512
868cd02655a96722589beef7df90ab945e014732dd30eb647402c399043792d0264cbafe7faf1185aace25cd09d90839c7ec50c19d4d69ff904e97f4d9900164

Download Submit
memory/1208-20-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1208-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1208-27-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1208-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3020-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3020-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3020-13-0x0000000002320000-0x0000000002330000-memory.dmp

Filesize
64KB

Download
memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing