f3536ea0615b9d894553a2bb17c1aba5bf593316fc88bcd02bd9a72ce06fd7e8

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:37

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General

Target

2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe
Size

42KB
MD5

5990091b19055221c3d1a9292bf4c6d8
SHA1

0e847108ae35e02e45d35fa6cfb27093c183f48c
SHA256

f3536ea0615b9d894553a2bb17c1aba5bf593316fc88bcd02bd9a72ce06fd7e8
SHA512

19e5e479dd506c6140a7c00b1923e7d003576450f93223c5eccc6922886538e306d8e13a2a9f23b823c85eaed5aef942d015a53babf4ef84aaecaa68105a1d49
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZnH:i5nkFGMOtEvwDpjR+viHsp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1660-13-0x00000000006D0000-0x00000000006DF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1660-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3036-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3036-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1660-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3036-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3036-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1660-13-0x00000000006D0000-0x00000000006DF000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1660-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3036-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3036-28-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

3036 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe

pid process

1660 2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3036	misid.exe

pid	process
1660	2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe

description	pid	process	target process
PID 1660 wrote to memory of 3036	1660	2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe	misid.exe
PID 1660 wrote to memory of 3036	1660	2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe	misid.exe
PID 1660 wrote to memory of 3036	1660	2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe	misid.exe
PID 1660 wrote to memory of 3036	1660	2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_5990091b19055221c3d1a9292bf4c6d8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1660

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:3036

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
42KB

MD5
a0387164bb44f6bbbe80ad301878839b

SHA1
a4a6981d9d38a0719123fd8bf11fe7a2ebb97ad8

SHA256
9bfb4e080fa7c7423d4b840eb300b5c2e69463a7b73589506152d0c3957fe56f

SHA512
b62bf969a16549c368dd015fe48cc056d228c163838dbbfba54ccca86a69160b221536c39f6c948db6b5ddd694562f2ecaef162853805d859d9d77182edf3177

Download Submit
memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1660-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1660-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1660-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1660-13-0x00000000006D0000-0x00000000006DF000-memory.dmp

Filesize
60KB

Download
memory/1660-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3036-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3036-27-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3036-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3036-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download