guloader | e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367

General

Target

e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
Size

419KB
MD5

1194e870e252e43b41cc724c1c7a987e
SHA1

e7a95416ebc253d9fe01fb3c90c6fa713143436d
SHA256

e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367
SHA512

d88e334a88740a5d71666757bc5309414deefe82c4bd601ea9d7dec1fc54cead898f750215028fef8026b7a948a7f184e4b06a0c9eb6e99e0ad55b014733b101
SSDEEP

12288:bch7SSzvYNxbs0V0utVFWN5yUBHWpwyx9fag6vI:bqvv2Vx0urqwg4xyrvI

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
1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe

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

Web Service

T1102

flow	ioc
13	drive.google.com
14	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
1660	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84

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
3568	1660	WerFault.exe	84

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	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84
PID 1184 wrote to memory of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84
PID 1184 wrote to memory of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84
PID 1184 wrote to memory of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84
PID 1184 wrote to memory of 1660	1184	e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe	84

C:\Users\Admin\AppData\Local\Temp\e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
"C:\Users\Admin\AppData\Local\Temp\e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.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:1184
- C:\Users\Admin\AppData\Local\Temp\e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe
  "C:\Users\Admin\AppData\Local\Temp\e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1660
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1476
    3⤵
    - Program crash
    PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1660 -ip 1660
1⤵
PID:2156

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\nsx9924.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1184-12-0x00000000041F0000-0x0000000004BBB000-memory.dmp

Filesize
9.8MB

Download
memory/1184-13-0x0000000077CE1000-0x0000000077E01000-memory.dmp

Filesize
1.1MB

Download
memory/1184-14-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1184-15-0x00000000041F0000-0x0000000004BBB000-memory.dmp

Filesize
9.8MB

Download
memory/1660-16-0x00000000016C0000-0x000000000208B000-memory.dmp

Filesize
9.8MB

Download
memory/1660-17-0x0000000077D68000-0x0000000077D69000-memory.dmp

Filesize
4KB

Download
memory/1660-18-0x0000000077D85000-0x0000000077D86000-memory.dmp

Filesize
4KB

Download
memory/1660-31-0x00000000016C0000-0x000000000208B000-memory.dmp

Filesize
9.8MB

Download
memory/1660-32-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1660-34-0x0000000077CE1000-0x0000000077E01000-memory.dmp

Filesize
1.1MB

Download
memory/1660-35-0x00000000016C0000-0x000000000208B000-memory.dmp

Filesize
9.8MB

Download

Analysis

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