b7e14afdad82075a641378045d86cccd1553a876fd60a12cc5ed45d29ec8b5f7

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:59

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General

Target

2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe
Size

39KB
MD5

ee7ecb2612f880e6b3507c862bc62657
SHA1

341f5d46b7d2e6f8e3601f46a9032c37ce5dd269
SHA256

b7e14afdad82075a641378045d86cccd1553a876fd60a12cc5ed45d29ec8b5f7
SHA512

c2aca7850998f422381e92a221cd5241e8053ad54cb753e384982a26dbd6bb911ae4b46977787394cf828343ae5957682acc320f5b6983f6f20f3f78b1f2cd1f
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBx:qDdFJy3QMOtEvwDpjjWMl7TdH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2668-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2668-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2668-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2668 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe

pid process

2196 2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe

pid	process
2668	asih.exe

pid	process
2196	2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2668-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe

description	pid	process	target process
PID 2196 wrote to memory of 2668	2196	2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe	asih.exe
PID 2196 wrote to memory of 2668	2196	2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe	asih.exe
PID 2196 wrote to memory of 2668	2196	2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe	asih.exe
PID 2196 wrote to memory of 2668	2196	2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_ee7ecb2612f880e6b3507c862bc62657_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2196

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2668

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
1830b67cafbf8486357c07c0aef09ad3

SHA1
8df446dbfcb6fe90796caad4497ecab93b340d4e

SHA256
f5c87bbec08dab07eb4ef65f0917103721e3de133ffcddd061c065426a5a5db0

SHA512
de5ec2893d1360a0e8a9984b4947b0086f7a2cbb9827980a34075917363852236cef65db53105b1c65e1ba6554240e31c5f4345bac85f4f2545c15ab967c0d73

Download Submit
memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2196-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2196-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2196-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2668-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2668-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2668-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download