guloader | ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f

Analysis

max time kernel
146s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-02-2025 03:55

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General

Target

ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe
Size

684KB
MD5

a427b0f23670795d88e895ac89f409ef
SHA1

1dbbf6026db9fd2a608b9bf20e4ff0d5412586f1
SHA256

ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f
SHA512

a03e1436cbea3061d8e1094294c21103ceb8d5ded2a03194fbe90b41a0c4e0e2753ca449b0d432f38f916897aeba956e6632dc34c91ae910c429a7bb6841369c
SSDEEP

12288:hDG4hAuAs8nf8gvArebnK9JUnnMam9x3neWTTiiuolhLFz:t2ns8nf8gvue7K9+nM59x3eWf4oLLFz

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 1 IoCs

pid	Process
2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe
1996	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 1996	2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe	30
PID 2420 wrote to memory of 1996	2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe	30
PID 2420 wrote to memory of 1996	2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe	30
PID 2420 wrote to memory of 1996	2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe	30
PID 2420 wrote to memory of 1996	2420	ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe	30

C:\Users\Admin\AppData\Local\Temp\ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe
"C:\Users\Admin\AppData\Local\Temp\ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe
  "C:\Users\Admin\AppData\Local\Temp\ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1996

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Skullcaps\Ndtrft\gammastraaling.ini

Filesize
7KB

MD5
208b492f269677c290c1d0a3b8435b0b

SHA1
3c3e494d0cc8f175e31ddc9a08dd1e3eca89b34f

SHA256
5a9b8ba78b02b3cc378637ae164f9f55491efa7bec601a2ea86f1016c00f7a3e

SHA512
ed30993831d4dc995ba50dc05cf8f6987c75cb0fcdea79c82236226611a9e86c1b23f24c66d1fb6cffa29a95992893cc11103c81f5d9972f059809319c4a1dcb

Download Submit
\Users\Admin\AppData\Local\Temp\nstAEB.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/1996-17-0x00000000014F0000-0x0000000005CDE000-memory.dmp

Filesize
71.9MB

Download
memory/1996-18-0x00000000779E0000-0x0000000077B89000-memory.dmp

Filesize
1.7MB

Download
memory/1996-19-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2420-16-0x00000000779E0000-0x0000000077B89000-memory.dmp

Filesize
1.7MB

Download
memory/2420-15-0x00000000779E1000-0x0000000077AE2000-memory.dmp

Filesize
1.0MB

Download