6c3271e68fbdc2e12e8b1962354f2ea749e2fd79e8e6c3ef8c2e3ff1bd54b8d1

General

Target

2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe
Size

40KB
MD5

53c00c69539e5ca2c78224031688f03b
SHA1

077856b46cdb9c0f054a8bb57a1bc123afa4e064
SHA256

6c3271e68fbdc2e12e8b1962354f2ea749e2fd79e8e6c3ef8c2e3ff1bd54b8d1
SHA512

3872547549830b77cedaa41bbcc7dae156429febb54973ddd96f3062eec2bb4d3e1e500022eddf08a125d27f43d353e376d4b68dccf8eadb994467489687ace9
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8Z1I:qDdFJy3QMOtEvwDpjjWMl7Tdn8ZG

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1932-12-0x0000000000620000-0x0000000000630000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1932-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2132-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1932-12-0x0000000000620000-0x0000000000630000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1932-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2132-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1932-12-0x0000000000620000-0x0000000000630000-memory.dmp	UPX
behavioral1/memory/1932-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2132-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2132 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe

pid process

1932 2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe

pid	process
2132	asih.exe

pid	process
1932	2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1932-12-0x0000000000620000-0x0000000000630000-memory.dmp	upx
behavioral1/memory/1932-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2132-27-0x0000000000500000-0x0000000000510000-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:

2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe

description	pid	process	target process
PID 1932 wrote to memory of 2132	1932	2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe	asih.exe
PID 1932 wrote to memory of 2132	1932	2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe	asih.exe
PID 1932 wrote to memory of 2132	1932	2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe	asih.exe
PID 1932 wrote to memory of 2132	1932	2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_53c00c69539e5ca2c78224031688f03b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
40KB

MD5
750d8dc5379576ae0b13af0860ed2c23

SHA1
888797d20dbd156395043cfdf540cdbab8bac812

SHA256
4a49764af0add6980ecc0b7ea06074fe1b86bf948f6aee714aee6ce0bb1a601e

SHA512
6f4dba6d34d84279594da8c792fd92aca252d9e9f02e652cec134ee53132ff10df7030c9b55b56d38b891b110165b28eade9e3b3484cdd5b59748df572e7adc8

Download Submit
memory/1932-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1932-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1932-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1932-9-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1932-12-0x0000000000620000-0x0000000000630000-memory.dmp

Filesize
64KB

Download
memory/1932-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2132-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2132-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2132-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads