c6b7416a8426bbcb5745a0df34573acad2779b585adbb6fb3584bde0e00f1f56

General

Target

2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe
Size

85KB
MD5

33827183c62dd87091601b11fec22881
SHA1

02e83eabbc7852cfd1fa27a17fc164bfec3ce783
SHA256

c6b7416a8426bbcb5745a0df34573acad2779b585adbb6fb3584bde0e00f1f56
SHA512

1cc04e7cb20a67410269622779e1a4ab0164d3666a6a77ac3c52b0bab325943f42af2b42924e23697e1c00d048351b115efcfce63579bff19375d66557bb9cf9
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7vM5O:T6a+rdOOtEvwDpjNB

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2080-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2080-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2080-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2080-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2080-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2080-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3044 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe

pid process

2080 2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe

pid	process
3044	asih.exe

pid	process
2080	2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2080-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2080-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3044-26-0x0000000000500000-0x0000000000510000-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:

2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe

description	pid	process	target process
PID 2080 wrote to memory of 3044	2080	2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe	asih.exe
PID 2080 wrote to memory of 3044	2080	2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe	asih.exe
PID 2080 wrote to memory of 3044	2080	2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe	asih.exe
PID 2080 wrote to memory of 3044	2080	2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_33827183c62dd87091601b11fec22881_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2080

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 Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
85KB

MD5
07d6b984857fd9de18aec618b6a3cce6

SHA1
e67eee1d0811f1d928b3c9c909a4fbf0267f182d

SHA256
570664f343418c472a46f85f2ddb9d3c61e9268d9019ad31380bef5c6ef62fb2

SHA512
a1cb62cd235a4835d4c582880e19dfee592efd0d73c00465e8af7d4d32772b6167b8a73538622f355d1f5d314fac267b142edaebb778de6625d5c1a407e236fa

Download Submit
memory/2080-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2080-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2080-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2080-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2080-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3044-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads