guloader | b9b78528efaa39eda121c478cdae30464f3f3046efbf13905e29d19fbf5373b1

General

Target

KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
Size

486KB
MD5

e6e505189b910675d61d54ac0c6b813d
SHA1

f7ab8fb65093f26dc9cbe03a694f7416b0e33347
SHA256

b9b78528efaa39eda121c478cdae30464f3f3046efbf13905e29d19fbf5373b1
SHA512

43309482266fdaf381b1a11c072c0f397f2826967b4d240438b67d8f80b9b1dd94a9fbe9c61723e8fd0eebd4912b51184dd372fd1c3d412346f9c42d6cda07e3
SSDEEP

12288:2OLjmwzqoFl1EE+fXDRwjd4CrkOIfhoC6WzwxC3+kMZ7pH:fjmw31EEGXDKkNhoC6f4WpH

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\liliths = "C:\\Users\\Admin\\Pegall\\Lithochromography19.exe"	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\pantomorphia.ben	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
5028	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4728 set thread context of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\mythified\akkumuleringer.Tid57	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Imperialises137\polydactylus.Ind	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
File opened for modification	C:\Windows\resources\underestimations\sovietistic.ten	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
File opened for modification	C:\Windows\inderliges.ini	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
File opened for modification	C:\Windows\resources\desarmeres.baa	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100
PID 4728 wrote to memory of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100
PID 4728 wrote to memory of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100
PID 4728 wrote to memory of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100
PID 4728 wrote to memory of 5028	4728	KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe	100

C:\Users\Admin\AppData\Local\Temp\KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
"C:\Users\Admin\AppData\Local\Temp\KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Local\Temp\KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe
  "C:\Users\Admin\AppData\Local\Temp\KEO-Order-3AY37A-APRIL_3103734_SUA721302_301824_01AU481924.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:5028

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1268 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:3952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsm6369.tmp\BgImage.dll

Filesize
7KB

MD5
6f9797fdc4fc7fca503af580999d4682

SHA1
8c8e234c4646e489c29efc00f2c9a9b8aa06f55e

SHA256
f03f83b88cd846b9cf05116c545fbb557f4ff37ce0bb0b2bee2ff0b4bde23a81

SHA512
ca92c560d3718668de90806d8adbf8f23a423e82040156e9b0682d17bc567b85ffd9b14a9a824539b3d97fcc59b20ff3d8cb8ea602402153ba5128aea4604dfb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsm6369.tmp\System.dll

Filesize
11KB

MD5
b853d5d2361ade731e33e882707efc34

SHA1
c58b1aeabdf1cbb8334ef8797e7aceaa7a1cb6be

SHA256
f0cd96e0b6e40f92ad1aa0efacde833bae807b92fca19bf062c1cf8acf29484b

SHA512
8ea31d82ffa6f58dab5632fe72690d3a6db0be65aec85fc8a1f71626773c0974dcebefae17bcf67c4c56ef442545e985eea0b348ff6e4fc36740640092b08d69

Download Submit
memory/4728-106-0x0000000005220000-0x0000000007EE2000-memory.dmp

Filesize
44.8MB

Download
memory/4728-107-0x0000000005220000-0x0000000007EE2000-memory.dmp

Filesize
44.8MB

Download
memory/4728-108-0x0000000077551000-0x0000000077671000-memory.dmp

Filesize
1.1MB

Download
memory/4728-109-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4728-117-0x0000000005220000-0x0000000007EE2000-memory.dmp

Filesize
44.8MB

Download
memory/5028-110-0x00000000016E0000-0x00000000043A2000-memory.dmp

Filesize
44.8MB

Download
memory/5028-112-0x00000000016E0000-0x00000000043A2000-memory.dmp

Filesize
44.8MB

Download
memory/5028-113-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads