291f37c41bfba1c0ceb7d711fae9453ae54385e8d35b354e118d910b45665dc8

General

Target

2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe
Size

95KB
MD5

5972ddb0212d68fd349dbed535915f8a
SHA1

88e004682ee1dd2ad1822a1ec422277eb27e37cd
SHA256

291f37c41bfba1c0ceb7d711fae9453ae54385e8d35b354e118d910b45665dc8
SHA512

c9ef71adac3c046dcaef2eb453b5bd107c73ffeb3b799859fe4a1517d4b4277f3a8529bf148abb0aecd1ff439243fb553ab79b4c8ac82beaec84179cba4cdb8f
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bY:zCsanOtEvwDpjBc

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012329-11.dat	CryptoLocker_rule2
behavioral1/memory/2012-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2012-13-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2108-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2012-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012329-11.dat	CryptoLocker_set1
behavioral1/memory/2012-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2012-13-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2108-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2012-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012329-11.dat	UPX
behavioral1/memory/2012-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2108-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2012-13-0x0000000000670000-0x0000000000680000-memory.dmp	UPX
behavioral1/memory/2108-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2108	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2012	2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2012-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012329-11.dat	upx
behavioral1/memory/2012-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2108-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2012-13-0x0000000000670000-0x0000000000680000-memory.dmp	upx
behavioral1/memory/2108-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 2012 wrote to memory of 2108	2012	2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe	28
PID 2012 wrote to memory of 2108	2012	2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe	28
PID 2012 wrote to memory of 2108	2012	2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe	28
PID 2012 wrote to memory of 2108	2012	2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_5972ddb0212d68fd349dbed535915f8a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2108

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

Replay Monitor

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Downloads

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

Filesize
95KB

MD5
4d9abb2e48ed80ddfcc8f92536e647b0

SHA1
51713a355f541822436bced09fba261512309a03

SHA256
d928c05401f6f52536af06635401053125af6d36b90aac764e7439d05b84af0b

SHA512
b2421028eb16dd7d41cd1108e93f7385c73bf169bfaa558b1cec7cbc2da414a6d172b1e58bd6b36f66070b9ad9746329bdfa528d95fd8b215515e2d8be54277d

Download Submit
memory/2012-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2012-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2012-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2012-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2012-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2012-13-0x0000000000670000-0x0000000000680000-memory.dmp

Filesize
64KB

Download
memory/2108-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-19-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/2108-24-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2108-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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