bcdf7534011e78d0450c77229435029800adda21994ca3c4917a17472f30a1a1

General

Target

2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe
Size

38KB
MD5

0206a9312433c65a85f96f3b7236aaba
SHA1

7006890e2dc70049a5d3718f96200a641ea5877a
SHA256

bcdf7534011e78d0450c77229435029800adda21994ca3c4917a17472f30a1a1
SHA512

fab592fdf673d5e58d6859030b207d2488f6d27e27c03e95021847d72c2a4ba6a20a5456da9c491c96423fef3c3f42da6832a21355f4942295322222ef9b578f
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYar:qDdFJy3QMOtEvwDpjjWMl7Tdr

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012339-11.dat	CryptoLocker_rule2
behavioral1/memory/2004-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-14-0x0000000002740000-0x0000000002750000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012339-11.dat	CryptoLocker_set1
behavioral1/memory/2004-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-14-0x0000000002740000-0x0000000002750000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012339-11.dat	UPX
behavioral1/memory/2004-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3044	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012339-11.dat	upx
behavioral1/memory/2004-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-27-0x0000000000500000-0x0000000000510000-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 2004 wrote to memory of 3044	2004	2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe	28
PID 2004 wrote to memory of 3044	2004	2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe	28
PID 2004 wrote to memory of 3044	2004	2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe	28
PID 2004 wrote to memory of 3044	2004	2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_0206a9312433c65a85f96f3b7236aaba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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

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Downloads

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

Filesize
38KB

MD5
01a7dd7ffe1ab1456201d391bb2f1921

SHA1
b967a6293545da8e23213f4036e7fd9adfc887af

SHA256
1c13f371e162d320f5fa03e124c2c54808299b502ff3ae720be21f0546791284

SHA512
fef4e6313982a8055d3c50abca9acefc3da06e90544b70b8cff4b60f96d39c34c54324f7602f061bae12ebabf0b25fba1a93d61fcca538a4da0f5668bc6ff0a1

Download Submit
memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2004-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2004-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2004-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-14-0x0000000002740000-0x0000000002750000-memory.dmp

Filesize
64KB

Download
memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-19-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3044-21-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3044-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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