6c7d288794c102582a324388235a1c908528bbdfc9b0bbad6cbf23b7f36ec6f0

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-04-2024 05:45

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General

Target

2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe
Size

54KB
MD5

cb4cd07ca7b3fa8da3e4b62d32d84115
SHA1

37bef5bdc59858efae5da1a3ac6ba09c6515ebe4
SHA256

6c7d288794c102582a324388235a1c908528bbdfc9b0bbad6cbf23b7f36ec6f0
SHA512

bea6a0721fbef4f005640efdad37fd3c23cb0d5a0f18c8f7ee23abf4ff89fe2f4c4cb9bdee09af500a891a868a005cb6ec4c45851c2cee1638de9136d36a0c8a
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlo:bP9g/xtCS3Dxx0r

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e00000001224e-11.dat	CryptoLocker_rule2
behavioral1/memory/2616-17-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000e00000001224e-11.dat	UPX
behavioral1/memory/2616-17-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2616	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000e00000001224e-11.dat	upx
behavioral1/memory/2616-17-0x0000000000400000-0x000000000040E000-memory.dmp	upx

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
1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe
2616	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 2616	1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe	28
PID 1936 wrote to memory of 2616	1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe	28
PID 1936 wrote to memory of 2616	1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe	28
PID 1936 wrote to memory of 2616	1936	2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_cb4cd07ca7b3fa8da3e4b62d32d84115_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1936
- 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:2616

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
54KB

MD5
02245cd1438188c3953c0b91644d0faa

SHA1
bfaad705a0a01156d86d01f0d384d9e122fab294

SHA256
8c95d3c342350095151b57af66a5f80a97d6ae81863daa28473be3b52bbef7a6

SHA512
510667f5615571327cf6141f10d72aa10d5fe8afa296ee71d08d7e5b6409e8935aaf8e50b6bf364f970ff8c4118e6b609970b5700d7a718b6247b8c5634bc6d5

Download Submit
memory/1936-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1936-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1936-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1936-3-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1936-16-0x0000000001EE0000-0x0000000001EEE000-memory.dmp

Filesize
56KB

Download
memory/2616-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2616-19-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download