4f7662013f2237517b64a1cc1705ad8bc828e204be944bf14260f95903ffbb4c

Analysis

max time kernel
155s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 03:44

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General

Target

2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe
Size

101KB
MD5

e81acb7ce0040a7a2c942b62ad354e59
SHA1

ca4ba90bf37d83b13a33429689792a1a1f05f990
SHA256

4f7662013f2237517b64a1cc1705ad8bc828e204be944bf14260f95903ffbb4c
SHA512

33568883d10882e50c99ad0fd8792b454985d8aab0daa6613f87c9ec6f1e54f77ceeaa59de0cdaf2abea171d38dd2a968ee29c17c5adb21e7c3294242352810e
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu5aTU:i5nkFGMOtEvwDpjNbwQEIikgN8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001225c-11.dat	CryptoLocker_rule2
behavioral1/memory/3024-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-14-0x0000000001EF0000-0x0000000001EFF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3024-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/3024-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3024-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 6 IoCs

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000a00000001225c-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3024-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2884-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2884-14-0x0000000001EF0000-0x0000000001EFF000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3024-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
3024	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe

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 2884 wrote to memory of 3024	2884	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	27
PID 2884 wrote to memory of 3024	2884	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	27
PID 2884 wrote to memory of 3024	2884	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	27
PID 2884 wrote to memory of 3024	2884	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

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\misid.exe

Filesize
101KB

MD5
1d601a2fe3d9f5c51eb3416f569aada5

SHA1
bc01d458fdd58fdc7a7e22536a4634e173eaf333

SHA256
1188839bc0135ef9fe09afabd9d880fee6ba0e878e625b107976caf723f8120d

SHA512
5b8a46f18f11bee5097eb8b7a3daa477493c9a8f70968dea14b6c57dcfa9d6d99c8e7a2b287ef9abddf7cc424b94a42728d0c7b92b285686d592a9ae9251931f

Download Submit
memory/2884-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

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

Filesize
24KB

Download
memory/2884-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2884-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2884-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2884-14-0x0000000001EF0000-0x0000000001EFF000-memory.dmp

Filesize
60KB

Download
memory/3024-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/3024-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3024-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download