9890331ba60b45a77035bb877957bf90e5d8df33b71f67e4e9bb3f93066c1aad

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
08-04-2024 22:53

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General

Target

2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe
Size

32KB
MD5

e6cbb8bfbd8003d48029e4bad90f858a
SHA1

48e524faba1d55ae576538f4ce16f17d675b806e
SHA256

9890331ba60b45a77035bb877957bf90e5d8df33b71f67e4e9bb3f93066c1aad
SHA512

3149fbf641ad9bd12e047c267fc62930f8fa31b4eb241809fecaa6ef0f6c81ba9670a3a003cd5a0b78f0d6b3516a4bc79281d61cd75df20d447851172ce08651
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/BOv2:b7o/2n1TCraU6GD1a4Xt9Qe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
868	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_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
2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe
868	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 868	2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_e6cbb8bfbd8003d48029e4bad90f858a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2216
- 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:868

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
32KB

MD5
328dc373b04723740b3c8a24ba8290ac

SHA1
11febbe6ccd678f5796efcda894bbd2cb15b4588

SHA256
ea265743fdc39af8237fc429166351a54d8176e20141f1e9e070e5cdebe92d79

SHA512
e7d3bb155ab892f641956379648f56cc84aca6511f49442476b8790a23d34112bc7ccbbb5521fd60c1ef9610652ae4fb0571e5dfcbdee884d226149f195357ea

Download Submit
memory/868-17-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2216-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2216-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2216-8-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download