guloader | 2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d

General

Target

2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
Size

554KB
MD5

2c5483106fe248cced82541b91cba20e
SHA1

41e69017b26287ee7814bb35a967672ba58cb714
SHA256

2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d
SHA512

4ca40026e8dc3da75c7e68334d268d5b08f568259e597af1fabbd1586f4aaf05c716e17d0bf4c88b68f765fab6ead6965afd73ecb0ead8b97d3ea1fd55d60130
SSDEEP

12288:4aqrw9z7Or5X16gS7U5XzJocC/Uisrk9qKyzpqK:5Kw9zar5lxYUtz2cC/lqVpqK

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
19	drive.google.com
20	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3112	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
3112	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2568 set thread context of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2228	3112	WerFault.exe	82

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	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3112	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
3112	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82
PID 2568 wrote to memory of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82
PID 2568 wrote to memory of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82
PID 2568 wrote to memory of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82
PID 2568 wrote to memory of 3112	2568	2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe	82

C:\Users\Admin\AppData\Local\Temp\2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
"C:\Users\Admin\AppData\Local\Temp\2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe
  "C:\Users\Admin\AppData\Local\Temp\2702bb251c14965787b39f03a9c41000b9b0421528578e5a6a221ad8b27f182d.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3112
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 1472
    3⤵
    - Program crash
    PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3112 -ip 3112
1⤵
PID:4524

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsm7F34.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Gaulin.ini

Filesize
37B

MD5
cfda8e6aade7958f94a959bdb29cb209

SHA1
59c459e105a7af33d13a365f735e3cb7b8e5ddb0

SHA256
b4543e8ab4997934d2edc7de8a76a24b7c2ccb641212ae3b9b17fe05b71d3e87

SHA512
edfdca00667ed3a5558f7e614373f0b8393763a979154666972c659cb44e75ccd51170e4e2189043046eb4ddb8a68642bbdb6f98a0e494e76e86faaf14f993b2

Download Submit
memory/2568-278-0x0000000003190000-0x0000000003CE1000-memory.dmp

Filesize
11.3MB

Download
memory/2568-279-0x0000000077571000-0x0000000077691000-memory.dmp

Filesize
1.1MB

Download
memory/2568-280-0x0000000003190000-0x0000000003CE1000-memory.dmp

Filesize
11.3MB

Download
memory/2568-281-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2568-301-0x0000000003190000-0x0000000003CE1000-memory.dmp

Filesize
11.3MB

Download
memory/3112-298-0x0000000001660000-0x00000000021B1000-memory.dmp

Filesize
11.3MB

Download
memory/3112-302-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-285-0x0000000077615000-0x0000000077616000-memory.dmp

Filesize
4KB

Download
memory/3112-283-0x0000000001660000-0x00000000021B1000-memory.dmp

Filesize
11.3MB

Download
memory/3112-299-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-300-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3112-282-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-284-0x00000000775F8000-0x00000000775F9000-memory.dmp

Filesize
4KB

Download
memory/3112-303-0x0000000077571000-0x0000000077691000-memory.dmp

Filesize
1.1MB

Download
memory/3112-304-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-305-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3112-306-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-307-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-308-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3112-309-0x0000000001660000-0x00000000021B1000-memory.dmp

Filesize
11.3MB

Download
memory/3112-310-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download

Analysis

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