guloader | 48b269a87fcf339ac55072876ed37a17cd4e6a9046ca481f33e0b268071f4cc0

Analysis

max time kernel
298s
max time network
298s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/09/2024, 14:29

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General

Target

DOR-Chemical Cleaning.exe
Size

845KB
MD5

70f8f19a10c45faffc9fe2b5fc3f03d1
SHA1

e06c6306221a88c7f0e04392f2131106a6349696
SHA256

cfd63c88e8099e2eaf0a4cb7e9ed18c20dadbf81c95032505366777f084b770c
SHA512

3b615f00c1df34f0420c06819546d7cf828abf258e7512f0276b9a61a9854a174ce5d5eba94f228e8da967dd7a53fc9aff284f13370e42855dd2e8311431209e
SSDEEP

12288:OoIjDxKzuJKIr0UupmVRKiTyVbMItQlEIn4ltAjF45yVWZXeaWxhZNvj:OKMkqIi2V6R+eFqRZXeP/vj

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2380	DOR-Chemical Cleaning.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2380	DOR-Chemical Cleaning.exe
2088	DOR-Chemical Cleaning.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2088	2380	DOR-Chemical Cleaning.exe	31

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	DOR-Chemical Cleaning.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOR-Chemical Cleaning.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2380	DOR-Chemical Cleaning.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31
PID 2380 wrote to memory of 2088	2380	DOR-Chemical Cleaning.exe	31

C:\Users\Admin\AppData\Local\Temp\DOR-Chemical Cleaning.exe
"C:\Users\Admin\AppData\Local\Temp\DOR-Chemical Cleaning.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\DOR-Chemical Cleaning.exe
  "C:\Users\Admin\AppData\Local\Temp\DOR-Chemical Cleaning.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2088

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\nstE570.tmp\System.dll

Filesize
12KB

MD5
dd87a973e01c5d9f8e0fcc81a0af7c7a

SHA1
c9206ced48d1e5bc648b1d0f54cccc18bf643a14

SHA256
7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

SHA512
4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

Download Submit
memory/2088-19-0x00000000014E0000-0x00000000054CC000-memory.dmp

Filesize
63.9MB

Download
memory/2088-20-0x0000000077290000-0x0000000077439000-memory.dmp

Filesize
1.7MB

Download
memory/2088-21-0x0000000000470000-0x00000000014D2000-memory.dmp

Filesize
16.4MB

Download
memory/2380-17-0x0000000077291000-0x0000000077392000-memory.dmp

Filesize
1.0MB

Download
memory/2380-18-0x0000000077290000-0x0000000077439000-memory.dmp

Filesize
1.7MB

Download