9bd7b28fa13b0f238133fb3a6c9065fd61acbe806e11976971f7ac2c92876b10

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 04:23 UTC

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General

Target

2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe
Size

57KB
MD5

052663c3d31dcc199baa233a47993b07
SHA1

7f58c64d0473f322de37fe32e48cab3a2bad1430
SHA256

9bd7b28fa13b0f238133fb3a6c9065fd61acbe806e11976971f7ac2c92876b10
SHA512

9787ad61bf09343dd03bb7eef3412125c0c8402ddcd58302ecb86f5d5f4762a281413000f057e2185c865d63637a0af4f1449a3a7814481c69398a7f9ffdc666
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgzCW:bP9g/xtCS3Dxx0nCW

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/1276-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e00000001214d-11.dat	CryptoLocker_rule2
behavioral1/memory/2068-16-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/1276-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000e00000001214d-11.dat	UPX
behavioral1/memory/2068-16-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2068	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1276-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000e00000001214d-11.dat	upx
behavioral1/memory/2068-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe
2068	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 2068	1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe	28
PID 1276 wrote to memory of 2068	1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe	28
PID 1276 wrote to memory of 2068	1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe	28
PID 1276 wrote to memory of 2068	1276	2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_052663c3d31dcc199baa233a47993b07_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1276
- 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:2068

Network

DNS

nasap.net

gewos.exe

Remote address:

8.8.8.8:53

Request

nasap.net

IN A

Response

nasap.net

IN A

35.212.119.5
GET

https://nasap.net/config/8mo.exe

gewos.exe

Remote address:

35.212.119.5:443

Request

GET /config/8mo.exe HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Host: nasap.net
Cache-Control: no-cache

Response

HTTP/1.1 202 Accepted

Server: nginx
Date: Mon, 27 May 2024 04:23:44 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
SG-Captcha: challenge
X-Robots-Tag: noindex
Set-Cookie: nevercache-b39818=Y;Max-Age=-1
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control: no-store,no-cache,max-age=0
Host-Header: 8441280b0c35cbc1147f8ba998a563a7
X-Proxy-Cache-Info: DT:1

35.212.119.5:443

https://nasap.net/config/8mo.exe

tls, http

gewos.exe

957 B
5.8kB
9
9

HTTP Request

GET https://nasap.net/config/8mo.exe

HTTP Response

202

8.8.8.8:53

nasap.net

dns

gewos.exe

55 B
71 B
1
1

DNS Request

nasap.net

DNS Response

35.212.119.5

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

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Downloads

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

Filesize
57KB

MD5
994fa4f3e09d47f9771cc8d2ae73a17a

SHA1
330cbba580303f35aa63016f660789efd0b81b99

SHA256
4780ce5b68146c7721696b1c77c0be7443ddad585e3b0c5824258a020bfafcef

SHA512
08cf4a8a7b1e3772803661ea30e67d6ce53fee806c2fbaa71f9ad39d85256cb88f64d1e15d7b3a560249f3f1c46acc59235d68375f692eee978851f7b90b242e

Download Submit
memory/1276-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1276-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1276-9-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2068-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2068-25-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

HTTP Request

HTTP Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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