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 spyware stealer

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
1968	Payment13022025000001111928374.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	checkip.dyndns.org
7	reallyfreegeoip.org
8	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2680	Payment13022025000001111928374.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1968	Payment13022025000001111928374.exe
2680	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 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	Payment13022025000001111928374.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payment13022025000001111928374.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1968	Payment13022025000001111928374.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	Payment13022025000001111928374.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2680	1968	Payment13022025000001111928374.exe	31
PID 1968 wrote to memory of 2680	1968	Payment13022025000001111928374.exe	31
PID 1968 wrote to memory of 2680	1968	Payment13022025000001111928374.exe	31
PID 1968 wrote to memory of 2680	1968	Payment13022025000001111928374.exe	31
PID 1968 wrote to memory of 2680	1968	Payment13022025000001111928374.exe	31

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:1968
- C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment13022025000001111928374.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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\nsoC8FC.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/1968-16-0x0000000077820000-0x00000000779C9000-memory.dmp

Filesize
1.7MB

Download
memory/1968-15-0x0000000077821000-0x0000000077922000-memory.dmp

Filesize
1.0MB

Download
memory/2680-17-0x00000000014F0000-0x0000000005CDE000-memory.dmp

Filesize
71.9MB

Download
memory/2680-18-0x0000000077820000-0x00000000779C9000-memory.dmp

Filesize
1.7MB

Download
memory/2680-19-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2680-22-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2680-24-0x0000000000480000-0x000000000049E000-memory.dmp

Filesize
120KB

Download
memory/2680-23-0x00000000014F0000-0x0000000005CDE000-memory.dmp

Filesize
71.9MB

Download

Analysis

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