42133e09911b566d50ea8aab7ce6e8dcfb75db03f648be5fdaa5068bddf0e9b8

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 15:37

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General

Target

2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe
Size

42KB
MD5

1e42565b26ac8fc46514da160186e31b
SHA1

919be4aa17ac96423435971d70789a78917429fd
SHA256

42133e09911b566d50ea8aab7ce6e8dcfb75db03f648be5fdaa5068bddf0e9b8
SHA512

fa34983d400b340d056a14e50b69435bef7ed6a04ca073a719b871f46545871bae86d790889fb8e2dfe5bed745854e5a2a26f035f15483feeae73b2a1aa40409
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqB:bc/y2lkF0+BeqB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000121ea-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2152	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe
2152	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2152	2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	28
PID 2072 wrote to memory of 2152	2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	28
PID 2072 wrote to memory of 2152	2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	28
PID 2072 wrote to memory of 2152	2072	2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e42565b26ac8fc46514da160186e31b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2152

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\rewok.exe

Filesize
42KB

MD5
05a37b660ff5d3dfe3a83094d845a65b

SHA1
a31c177eb5493c6bae0d1e26f7d8196682258126

SHA256
8f178f116cc350af0394c8971e84f51e873e639be1ce54c6a18a8dac205a392e

SHA512
d68df0846581c2341c532596bc322d47087df0189a4097ea74fd30d639ee7012b82283228115cb487b5d0676472a940da7c65cadd98e50aa43abccb820182647

Download Submit
memory/2072-0-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2072-1-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2072-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2152-16-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download