guloader | dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a

Analysis

max time kernel
145s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 13:32

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General

Target

dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe
Size

701KB
MD5

818e095a728bb7fde8d34c3276c01e15
SHA1

5bc32d174f3dc493312b330d01ceb55e58127f4c
SHA256

dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a
SHA512

3f65fe9b8b0755ae9faad6cd7028fae580e09401de2eb988814292458c256c21ea01ba1e481ecd28c7c8615b0457405b32744be7190bdae58846c300c9ef3672
SSDEEP

12288:bvp1DrAkngRmfxs7u//fARGujCxyIG1TxHhsS14P6bu4:TnDrA/mfWu/gnjNdNhd14CV

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe
716	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2880 set thread context of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\stanse\selenitic.imp	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe
File opened for modification	C:\Windows\Fonts\humanhood.krs	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93
PID 2880 wrote to memory of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93
PID 2880 wrote to memory of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93
PID 2880 wrote to memory of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93
PID 2880 wrote to memory of 716	2880	dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe	93

C:\Users\Admin\AppData\Local\Temp\dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe
"C:\Users\Admin\AppData\Local\Temp\dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Users\Admin\AppData\Local\Temp\dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe
  "C:\Users\Admin\AppData\Local\Temp\dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:716

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

C:\Users\Admin\AppData\Local\Temp\nst5034.tmp\System.dll

Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
memory/716-12-0x0000000001740000-0x00000000043E2000-memory.dmp

Filesize
44.6MB

Download
memory/716-20-0x00000000004E0000-0x0000000001734000-memory.dmp

Filesize
18.3MB

Download
memory/716-22-0x0000000001740000-0x00000000043E2000-memory.dmp

Filesize
44.6MB

Download
memory/2880-9-0x0000000002B10000-0x00000000057B2000-memory.dmp

Filesize
44.6MB

Download
memory/2880-10-0x0000000077581000-0x00000000776A1000-memory.dmp

Filesize
1.1MB

Download
memory/2880-11-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2880-19-0x0000000002B10000-0x00000000057B2000-memory.dmp

Filesize
44.6MB

Download
memory/2880-27-0x0000000002B10000-0x00000000057B2000-memory.dmp

Filesize
44.6MB

Download