27a5081cb015c5cb61a886a86d5e452485146ee95ae518d18c36401da8d0eac9

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 06:34

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General

Target

2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe
Size

35KB
MD5

7948eadc7a51ee4efa97dbea2b047b62
SHA1

8dc1695fbb5585030f7f88b24e74e4f9e5d8082e
SHA256

27a5081cb015c5cb61a886a86d5e452485146ee95ae518d18c36401da8d0eac9
SHA512

e99fdc88ee39f853776251c86b69c6743d853e7026e535086133ca86981e9bb02e7823c05535de6b76b1fa606223693e294ed7ed7d62d5b08814b1aef4533d6b
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3q4aKtf:b7o/2n1TCraU6GD1a4Xt9bRU64htf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121e6-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2240	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_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
1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe
2240	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 2240	1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	28
PID 1192 wrote to memory of 2240	1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	28
PID 1192 wrote to memory of 2240	1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	28
PID 1192 wrote to memory of 2240	1192	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1192
- 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:2240

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
35KB

MD5
d87ad48f636da130f32a2376ba7e4e05

SHA1
39645ad7571d0b974329e5af12b19f581df24a46

SHA256
bb65602e162a1b559c0de1e9d74f7a53794ffef20b38517a21363cd003ab4373

SHA512
966af82c3f2b2acd09c30549f851f499623b1e0cadc58fc53883a610697b4f29aee044ef64ff6b520162a45823fc468a32e7df17237a1937ee1d7caf818cab75

Download Submit
memory/1192-0-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1192-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1192-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2240-16-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download