guloader | ba0f881b0462cfdac753320699ef91fff494497e9fe3ac5c3b9af951f0e14b4f

General

Target

Payment13022025000001111928374.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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
29	4872	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
3632	Payment13022025000001111928374.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3632	Payment13022025000001111928374.exe
4844	Payment13022025000001111928374.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 3 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	Payment13022025000001111928374.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payment13022025000001111928374.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
628	MicrosoftEdgeUpdate.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3632	Payment13022025000001111928374.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3632 wrote to memory of 4844	3632	Payment13022025000001111928374.exe	102
PID 3632 wrote to memory of 4844	3632	Payment13022025000001111928374.exe	102
PID 3632 wrote to memory of 4844	3632	Payment13022025000001111928374.exe	102
PID 3632 wrote to memory of 4844	3632	Payment13022025000001111928374.exe	102

C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe
"C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3632
- C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:4844

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0NjcwNjk4NDE0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:628

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nskB8E2.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

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

Filesize
7KB

MD5
208b492f269677c290c1d0a3b8435b0b

SHA1
3c3e494d0cc8f175e31ddc9a08dd1e3eca89b34f

SHA256
5a9b8ba78b02b3cc378637ae164f9f55491efa7bec601a2ea86f1016c00f7a3e

SHA512
ed30993831d4dc995ba50dc05cf8f6987c75cb0fcdea79c82236226611a9e86c1b23f24c66d1fb6cffa29a95992893cc11103c81f5d9972f059809319c4a1dcb

Download Submit
memory/3632-15-0x00000000771B1000-0x00000000772D1000-memory.dmp

Filesize
1.1MB

Download
memory/3632-17-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3632-16-0x00000000771B1000-0x00000000772D1000-memory.dmp

Filesize
1.1MB

Download
memory/4844-18-0x00000000016E0000-0x0000000005ECE000-memory.dmp

Filesize
71.9MB

Download
memory/4844-19-0x0000000077238000-0x0000000077239000-memory.dmp

Filesize
4KB

Download
memory/4844-20-0x0000000077255000-0x0000000077256000-memory.dmp

Filesize
4KB

Download
memory/4844-21-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/4844-22-0x00000000771B1000-0x00000000772D1000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing