f9801c247c63cac59aa3dba88346494047e3c737ea69de0172cd2ddc511ecd5b

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 20:28

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General

Target

2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe
Size

47KB
MD5

88cba7eea9eff056d15968f757fb0a80
SHA1

23ef994932a14fe9b8c9435a98bed3f827a35d62
SHA256

f9801c247c63cac59aa3dba88346494047e3c737ea69de0172cd2ddc511ecd5b
SHA512

5f8cffce54388c22421cf55a7be584f4b62e02ccacd2c47f83780a31d41fb5c2cb7801c436d9dea8193d3baf496425265aef78219ba313b0726d5d9a77f69f30
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsmr:xj+VGMOtEvwDpjy+viHsi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000122ee-11.dat	CryptoLocker_rule2
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2684-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b0000000122ee-11.dat	CryptoLocker_set1
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2684-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b0000000122ee-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2684-24-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2684	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	2024-04-28_88cba7eea9eff056d15968f757fb0a80_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 2148 wrote to memory of 2684	2148	2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe	28
PID 2148 wrote to memory of 2684	2148	2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe	28
PID 2148 wrote to memory of 2684	2148	2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe	28
PID 2148 wrote to memory of 2684	2148	2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_88cba7eea9eff056d15968f757fb0a80_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2684

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

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Downloads

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

Filesize
47KB

MD5
046709c8d53859035e55f43437ab0f74

SHA1
2135833dc4cba1165593dab705fa82e3e4368096

SHA256
19df3b8f79f623a201e4ca8a9b707335742dded89570fa650f4a8524c7af5dc8

SHA512
d1d38489e4b94a9d9974b79746cc07e4134294f785c07fa9d3a473103c4d130edca595060948c283b3169b6a3ca65860c24ab1380f71efbf7de17396db97351a

Download Submit
memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2148-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2148-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2148-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2684-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2684-17-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download