c714afdd08a37d301706580316bb17161c4613b04b75437cdd6c6711cb340aab

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:00

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General

Target

2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe
Size

40KB
MD5

f7d3668b5ded119e2c2c9ae017ff710b
SHA1

3b5e2a501ba17e943aa144949784891749abf9c9
SHA256

c714afdd08a37d301706580316bb17161c4613b04b75437cdd6c6711cb340aab
SHA512

e5f380e7ac3c12ae7d24e4578f1b47dec47156d28546595cfa37258c301f5b4b37593b3e40dfa8cfc4c470b68f30c11f4a15509b5615e048bb2c6863843c87e5
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYw:qDdFJy3QMOtEvwDpjjWMl7TV

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2188-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2188-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2188-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2084 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe

pid process

2188 2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe

pid	process
2084	asih.exe

pid	process
2188	2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2188-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe

description	pid	process	target process
PID 2188 wrote to memory of 2084	2188	2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2084	2188	2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2084	2188	2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2084	2188	2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_f7d3668b5ded119e2c2c9ae017ff710b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2084

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
98f819a5907bdb3b7167976ec09aaed1

SHA1
7f81cb353bb4529bae32d9b8bbd9c5a44093201a

SHA256
8ccd3dae93849edfe9eae10d90fa5df0771330cf4be674553059bc2a2cc35c7e

SHA512
da23b7f1bc237fb6789a3850ad00e96cbca4bc9eb1c9621c3274a1868729c0369b3094c9f1c1bab68b6b258728a741ba6785f775c9ab5d25d4c348f1b6621661

Download Submit
memory/2084-19-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2084-26-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2188-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-14-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

Filesize
64KB

Download