0eb5eba5a0b1035855bcbfbda1a5fac957455baf2428961561a99c55e21c8385

Analysis

max time kernel
117s
max time network
125s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18/08/2024, 15:28

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General

Target

2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
Size

57KB
MD5

c6bff227bacc93cb742bc02efd92af32
SHA1

95fe8f1467e5a24289a4cffa7a00b727fb8cce15
SHA256

0eb5eba5a0b1035855bcbfbda1a5fac957455baf2428961561a99c55e21c8385
SHA512

799ddd43f45dc465342fbe4b8161ec091609445b24a6b0e8f8d42801259815af2bb01003a43d38f0b28f12c5c6f2f45cc96d370a976eb4a31dbf864a526923ec
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+V:bP9g/xtCS3Dxx0JV

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2428	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x0007000000012119-11.dat	upx
behavioral1/memory/2428-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
2428	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2428	2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	30
PID 2936 wrote to memory of 2428	2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	30
PID 2936 wrote to memory of 2428	2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	30
PID 2936 wrote to memory of 2428	2936	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
57KB

MD5
40309c2a46d9292204f3efd4488ab263

SHA1
194baea26b8c1605904379aa24b55c46173bdd98

SHA256
27d3e9001301b83fb9802b514e936dc73dff2df58a13cb9682cef17d6c3d06d1

SHA512
10588c2b41bc57c88c76bbfbaa199790f2b4409643648d437df87c2d4419ea50920a64a04f77f877fe80399647dedf445f3833a953fc902c9d053db262c9961f

Download Submit
memory/2428-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2428-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2936-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2936-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2936-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2936-8-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download