4c265e2de5d922bf14a6bf5d87c22d5f4a235d0195715a851931df78c67da3ff

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22/05/2024, 14:55

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General

Target

2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe
Size

39KB
MD5

994e01a48d213397e58d6a07dbbcc09f
SHA1

3fd731577d42b2d7cf1d80af6ade1062f85cc38f
SHA256

4c265e2de5d922bf14a6bf5d87c22d5f4a235d0195715a851931df78c67da3ff
SHA512

eb0bc5accf91fb138b2343d77e72c4c1c966559871b7e2e034b288db665b6993965f9a90eabc40dea500b830dcf8189e65865f3a318fc5d237b84e1101f7a850
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYoa:qDdFJy3QMOtEvwDpjjWMl7Tla

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/788-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012286-11.dat	CryptoLocker_set1
behavioral1/memory/788-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012286-11.dat	UPX
behavioral1/memory/788-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2936	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
788	2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012286-11.dat	upx
behavioral1/memory/788-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-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 788 wrote to memory of 2936	788	2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe	28
PID 788 wrote to memory of 2936	788	2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe	28
PID 788 wrote to memory of 2936	788	2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe	28
PID 788 wrote to memory of 2936	788	2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_994e01a48d213397e58d6a07dbbcc09f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:788
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2936

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
40KB

MD5
a153f6bb0ce3015c42d4146f88fe977c

SHA1
436e8621147b48fb094cae2235514e239a28e334

SHA256
ee092655a2ab7a32b1eb41ae4bfb98c85660388eedfc12b361062be4cfaa87bd

SHA512
d611e187a12a70af5d22c3bdf0abd116efe384e3583c5fa5c25b2bfe7c84835750c41125e1cc209147c98832a76a45d9810a8b7e8bcc3cae39704b27782b490e

Download Submit
memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/788-1-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/788-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/788-9-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/788-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2936-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2936-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download