guloader | 52a461a0646830e5265c1ab62c933de6889f0bcd5ffced4f654b92495e982d4e

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24/12/2024, 19:53

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General

Target

ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe
Size

345KB
MD5

8fb7e4b49fc7aac5d90fe5d9a79e059d
SHA1

1e950ba32a1445db7e57d1d933d9fcbd3664a2ad
SHA256

ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115
SHA512

6048871d0a17b34cabbdf72d639208b90b4d54020b9e761e32a4063ca782cc910127e656f64c7bc0efd557e367108628dc536ef6c8d4e2d11d7824075f2e8a07
SSDEEP

6144:BbE/HU7hZwSGv3o5OyG4q+ETeuAShYvmy4Bob6XuCBF:BbJZjGVeETeuASCe9Bw6eCb

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 2 IoCs

pid	Process
2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe
2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\UNWROUGHT.SIB	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe
File opened for modification	C:\Windows\resources\0409\Bramdrupdam170.Nom3	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe

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
2520	2192	WerFault.exe	27

System Location Discovery: System Language Discovery 1 TTPs 1 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	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2520	2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe	30
PID 2192 wrote to memory of 2520	2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe	30
PID 2192 wrote to memory of 2520	2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe	30
PID 2192 wrote to memory of 2520	2192	ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe	30

C:\Users\Admin\AppData\Local\Temp\ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe
"C:\Users\Admin\AppData\Local\Temp\ce519c88c449ba56306326bae15307bb0977e355207d57c013b8fe1ff2a0a115.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 664
  2⤵
  - Program crash
  PID:2520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\nsoC8AD.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/2192-20-0x0000000003C60000-0x0000000003D60000-memory.dmp

Filesize
1024KB

Download
memory/2192-21-0x0000000003C60000-0x0000000003D60000-memory.dmp

Filesize
1024KB

Download