guloader | b13417ae29a0b5dc10cb8176006034c61d41fd9e20037c4023ab514b193fa69a

General

Target

Bestellung.exe
Size

804KB
MD5

c56f440f15955f0cae85df17d5a52140
SHA1

3c5c933bf8b68b04f621a5c70c9562d06e857bbd
SHA256

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7
SHA512

7b191331b52c99ab9bac9c12be29d59f7efb705d4af1efdee2d05b887143398e8442f11664ae4c4b6716ecff2a729a5496b04c6f9e3fbc97e211d2b50c86312c
SSDEEP

24576:qG+yqROz6skIpE2NVPl7LE8oy9jRKta3uja581CL:NMRnsn1NVt7L7o/ap

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

Processes:

Bestellung.exe

pid	Process
2096	Bestellung.exe
2096	Bestellung.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

Bestellung.exe

pid	Process
1048	Bestellung.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Bestellung.exeBestellung.exe

pid	Process
2096	Bestellung.exe
1048	Bestellung.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Bestellung.exe

description	pid	Process	procid_target
PID 2096 set thread context of 1048	2096	Bestellung.exe	96

Drops file in Program Files directory 1 IoCs

Processes:

Bestellung.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\customization.rom	Bestellung.exe

Drops file in Windows directory 1 IoCs

Processes:

Bestellung.exe

description	ioc	Process
File opened for modification	C:\Windows\resources\primy.ini	Bestellung.exe

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

Processes:

Bestellung.exeBestellung.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bestellung.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bestellung.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

Bestellung.exe

pid	Process
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe
1048	Bestellung.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Bestellung.exe

pid	Process
2096	Bestellung.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Bestellung.exe

description	pid	Process	procid_target
PID 2096 wrote to memory of 1048	2096	Bestellung.exe	96
PID 2096 wrote to memory of 1048	2096	Bestellung.exe	96
PID 2096 wrote to memory of 1048	2096	Bestellung.exe	96
PID 2096 wrote to memory of 1048	2096	Bestellung.exe	96
PID 2096 wrote to memory of 1048	2096	Bestellung.exe	96

C:\Users\Admin\AppData\Local\Temp\Bestellung.exe
"C:\Users\Admin\AppData\Local\Temp\Bestellung.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\Bestellung.exe
  "C:\Users\Admin\AppData\Local\Temp\Bestellung.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsjAA0C.tmp\System.dll

Filesize
12KB

MD5
192639861e3dc2dc5c08bb8f8c7260d5

SHA1
58d30e460609e22fa0098bc27d928b689ef9af78

SHA256
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

SHA512
6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

Download Submit
C:\Windows\Resources\primy.ini

Filesize
33B

MD5
76d9175a3db7407eb0bfc3c07ddcd9d2

SHA1
72071127e9a44935cb02650ed715ccaf6a8f8418

SHA256
1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5

SHA512
5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69

Download Submit
memory/1048-23250-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23244-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23255-0x0000000001660000-0x0000000004742000-memory.dmp

Filesize
48.9MB

Download
memory/1048-23254-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23241-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23251-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23243-0x0000000001660000-0x0000000004742000-memory.dmp

Filesize
48.9MB

Download
memory/1048-23249-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1048-23248-0x0000000001660000-0x0000000004742000-memory.dmp

Filesize
48.9MB

Download
memory/2096-23238-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

Filesize
48.9MB

Download
memory/2096-23237-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

Filesize
48.9MB

Download
memory/2096-23242-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

Filesize
48.9MB

Download
memory/2096-23240-0x0000000074365000-0x0000000074366000-memory.dmp

Filesize
4KB

Download
memory/2096-23239-0x0000000077671000-0x0000000077791000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads