8c18b0195edb1ea28588e08dd4822d8277d9df67f62ab7bff62f9504e9a3ac5e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:45

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General

Target

2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe
Size

39KB
MD5

8510c8a340f6d1347c1d2b589a91ebd4
SHA1

3ca404e97db78d9c87fadc011ca313ae40e485e7
SHA256

8c18b0195edb1ea28588e08dd4822d8277d9df67f62ab7bff62f9504e9a3ac5e
SHA512

6bd15bc890522c91cb4f7d6707e7df8ff6890a9ae8f4eb8bfc6bab02c429f00c603006f011fd1e0dbfd5ef808fe5dc39cd687b8525499109702b40aaf9f3c23a
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabD4:qDdFJy3QMOtEvwDpjjWMl7Tdw

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3016 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe

pid process

2884 2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe

pid	process
3016	asih.exe

pid	process
2884	2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-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:

2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe

description	pid	process	target process
PID 2884 wrote to memory of 3016	2884	2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe	asih.exe
PID 2884 wrote to memory of 3016	2884	2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe	asih.exe
PID 2884 wrote to memory of 3016	2884	2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe	asih.exe
PID 2884 wrote to memory of 3016	2884	2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_8510c8a340f6d1347c1d2b589a91ebd4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2884

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3016

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

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

Filesize
39KB

MD5
357f923583b63c78034dd5203c451a19

SHA1
22bde6a8248b12a5b4ee87f03f58bcafbacc0892

SHA256
0a4e04ebd9eafc931b1b3ea01fab7d181e40a2f56cd5f557fdd7757ea67db03e

SHA512
1fe199c51ee58dc4f8e64933195bf65897bfa62b97f3b7c39aa28e83a368a18c2fea365722a3fef62a3e61b79f55dcb5eec299daa2f5377a777ad43b547c3259

Download Submit
memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2884-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2884-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2884-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3016-25-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download