guloader | 6d7f0587ad61a77009ec4d739d3ffd3f74e0ab8a572913812bef6b8c2b89ea54

Resubmissions

20-11-2024 09:24

241120-lc2m4azjdp 10

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 09:24

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General

Target

PayeeAdvice_HK54912_R0038704_37504.exe
Size

568KB
MD5

62134cc34c58682721cb5bd2a9ba3624
SHA1

a650b3507161f8d705b183db6a965307d95625f4
SHA256

6d7f0587ad61a77009ec4d739d3ffd3f74e0ab8a572913812bef6b8c2b89ea54
SHA512

60de740c1ab5cd301a41a0ea483bbef28e3005acd73d61e808a0510cc95e746f25b18f39503110b80e5834275df9d1702639f0ed7ba90fadeba7809a9a9a4a82
SSDEEP

12288:32EITCKwUDsCypz+ZfyimdUTPhBDJxqmd3ZhZq:3wTKUDvypKJyihTj7qmdPZq

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

Processes:

PayeeAdvice_HK54912_R0038704_37504.exe

pid process

2616 PayeeAdvice_HK54912_R0038704_37504.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

PayeeAdvice_HK54912_R0038704_37504.exePayeeAdvice_HK54912_R0038704_37504.exe

pid process

2616 PayeeAdvice_HK54912_R0038704_37504.exe
2264 PayeeAdvice_HK54912_R0038704_37504.exe

pid	process
2616	PayeeAdvice_HK54912_R0038704_37504.exe

pid	process
2616	PayeeAdvice_HK54912_R0038704_37504.exe
2264	PayeeAdvice_HK54912_R0038704_37504.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PayeeAdvice_HK54912_R0038704_37504.exe

description	pid	process	target process
PID 2616 set thread context of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe

Drops file in Windows directory 1 IoCs

Processes:

PayeeAdvice_HK54912_R0038704_37504.exe

description ioc process

File opened for modification C:\Windows\resources\0409\slnger\barometerstandenes.san PayeeAdvice_HK54912_R0038704_37504.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	PayeeAdvice_HK54912_R0038704_37504.exe

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:

PayeeAdvice_HK54912_R0038704_37504.exePayeeAdvice_HK54912_R0038704_37504.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PayeeAdvice_HK54912_R0038704_37504.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PayeeAdvice_HK54912_R0038704_37504.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

PayeeAdvice_HK54912_R0038704_37504.exe

pid process

2616 PayeeAdvice_HK54912_R0038704_37504.exe

pid	process
2616	PayeeAdvice_HK54912_R0038704_37504.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

PayeeAdvice_HK54912_R0038704_37504.exe

description	pid	process	target process
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe
PID 2616 wrote to memory of 2264	2616	PayeeAdvice_HK54912_R0038704_37504.exe	PayeeAdvice_HK54912_R0038704_37504.exe

C:\Users\Admin\AppData\Local\Temp\PayeeAdvice_HK54912_R0038704_37504.exe
"C:\Users\Admin\AppData\Local\Temp\PayeeAdvice_HK54912_R0038704_37504.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\PayeeAdvice_HK54912_R0038704_37504.exe
  "C:\Users\Admin\AppData\Local\Temp\PayeeAdvice_HK54912_R0038704_37504.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2264

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\Local\Temp\CabCDE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarD01.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\Users\Admin\AppData\Local\Temp\nsyDD07.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2264-13-0x00000000773A0000-0x0000000077549000-memory.dmp

Filesize
1.7MB

Download
memory/2264-66-0x00000000007E0000-0x0000000001842000-memory.dmp

Filesize
16.4MB

Download
memory/2616-9-0x0000000002FC0000-0x0000000004739000-memory.dmp

Filesize
23.5MB

Download
memory/2616-10-0x00000000773A1000-0x00000000774A2000-memory.dmp

Filesize
1.0MB

Download
memory/2616-11-0x00000000773A0000-0x0000000077549000-memory.dmp

Filesize
1.7MB

Download
memory/2616-12-0x0000000002FC0000-0x0000000004739000-memory.dmp

Filesize
23.5MB

Download