guloader | 2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a

General

Target

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
Size

967KB
MD5

f33b6e1067bf27d4bea237206532881e
SHA1

5602bb70d47fb5f8061688b62b6f9b3bafd1a4bc
SHA256

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a
SHA512

4bd51edf3d884ac43dac8f5f1f856020b3ebfa569754da47ce98bca18e7389ea439af3624441200ea330b9821f6596b5e433b41d6ba0397590afe95a53381280
SSDEEP

24576:oewAoAZIk1OZaFT40sBSBCbnx7eqhOxQUsHVSm:CAFLEZaChBSBCr5eqoxQhHs

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 6 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

pid	Process
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

pid	Process
1920	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

pid	Process
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
1920	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

description	pid	Process	procid_target
PID 3452 set thread context of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92

Drops file in Windows directory 1 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\mysterist.ini	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
456	1920	WerFault.exe	92

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:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

pid	Process
1920	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
1920	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

pid	Process
3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe

description	pid	Process	procid_target
PID 3452 wrote to memory of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92
PID 3452 wrote to memory of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92
PID 3452 wrote to memory of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92
PID 3452 wrote to memory of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92
PID 3452 wrote to memory of 1920	3452	2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe	92

C:\Users\Admin\AppData\Local\Temp\2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
"C:\Users\Admin\AppData\Local\Temp\2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.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:3452
- C:\Users\Admin\AppData\Local\Temp\2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe
  "C:\Users\Admin\AppData\Local\Temp\2ab9083b17140ee82b2d96fceecfc3ad8c286b320222b074719fe7a1852ab91a.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1920
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 224
    3⤵
    - Program crash
    PID:456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1920 -ip 1920
1⤵
PID:3284

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsk7919.tmp\LangDLL.dll

Filesize
5KB

MD5
3dd80dff583544514eeb3a5ed851a519

SHA1
56f7324d9d4230c96d1963e7b3e02b05a6cf5c24

SHA256
86cff5eaca76c49f924cb123d242fdcfd45ab99c4b638d3b8f4a8cfb1970ab5b

SHA512
955f4df195b5d134449904e9020f80125cfb64d70d9482ff583451f3fcb10d15577ceac4180f71a96452d8478f6365160ab15731f9a79a494383087c9310fd1d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk7919.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/1920-37-0x0000000001660000-0x0000000002A64000-memory.dmp

Filesize
20.0MB

Download
memory/1920-38-0x0000000000403000-0x0000000000447000-memory.dmp

Filesize
272KB

Download
memory/1920-42-0x0000000000403000-0x0000000000447000-memory.dmp

Filesize
272KB

Download
memory/1920-41-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1920-40-0x0000000077001000-0x0000000077121000-memory.dmp

Filesize
1.1MB

Download
memory/1920-32-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1920-33-0x0000000001660000-0x0000000002A64000-memory.dmp

Filesize
20.0MB

Download
memory/1920-34-0x0000000077088000-0x0000000077089000-memory.dmp

Filesize
4KB

Download
memory/1920-35-0x00000000770A5000-0x00000000770A6000-memory.dmp

Filesize
4KB

Download
memory/1920-36-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1920-39-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3452-31-0x0000000004A50000-0x0000000005E54000-memory.dmp

Filesize
20.0MB

Download
memory/3452-27-0x0000000004A50000-0x0000000005E54000-memory.dmp

Filesize
20.0MB

Download
memory/3452-28-0x0000000077001000-0x0000000077121000-memory.dmp

Filesize
1.1MB

Download
memory/3452-30-0x0000000004A50000-0x0000000005E54000-memory.dmp

Filesize
20.0MB

Download
memory/3452-29-0x0000000073E64000-0x0000000073E65000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads