b64bf57c9e057c30d604d94bb2c86d76f56f9d20984555a587e85c34b83f73f0

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-03-2024 17:40

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General

Target

2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe
Size

36KB
MD5

c75b6da235f3efe1cc56fdb7af5c58c3
SHA1

57146b69398fecf2dba4468ea8194f7ded41d650
SHA256

b64bf57c9e057c30d604d94bb2c86d76f56f9d20984555a587e85c34b83f73f0
SHA512

d6cf2ad2c8f4e83ec1e3a3261706d9982980ccc710fdfc1f7ef4c3dd28b3a1c8f47094cd4dd26a409003a13b8a7f93985f1745617c7c194e31d5e93de7b29b48
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0q8Elk8DoE:btB9g/WItCSsAGjX7r3BT9lkU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000014466-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2692	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_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
2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe
2692	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2692	2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe	28
PID 2760 wrote to memory of 2692	2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe	28
PID 2760 wrote to memory of 2692	2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe	28
PID 2760 wrote to memory of 2692	2760	2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_c75b6da235f3efe1cc56fdb7af5c58c3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2692

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\gewos.exe

Filesize
36KB

MD5
b1ce55e11522ac169df49a16bafa8bb4

SHA1
e766adf0046a9d1e6cae3cab4ee4fd790094d3a5

SHA256
9c72efbdc08f5f54ba50d9613cdc0561d11a99a84762385f5b89e7cb798ce374

SHA512
56d75415f7af916085a0129b75a2077f9d79d5e679291f4a47f708d7135cf51b80161169946dc857396c34b4d0986cdb5c0fd6b1d8cf45e0c582b562a090d449

Download Submit
memory/2692-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2760-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2760-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2760-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download