guloader | 428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5

General

Target

428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
Size

1.2MB
MD5

9d5eb89430a3fbb76a89bfc366d3f67a
SHA1

35d692f12e566347a9b73bca10613e888eb6c4fc
SHA256

428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5
SHA512

09a32866cd81de645e5f62437372d8a7f6de55c4154a5131537a17fb1ece15c46129654e6c65b5202fb3b0632feda7f93c7f158c30341bef2f7c2d2a52538713
SSDEEP

24576:wDGGviC622UbPBld6mLOtkW2fAbuEtNvL1DqaWPm:UGGvz9Nb5ldzLOtkjIptHWaWm

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Loads dropped DLL 3 IoCs

pid	Process
2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

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

Web Service

T1102

flow	ioc
3	drive.google.com
5	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Abstinenser180\billedsynteses\nettopriser.lnk	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\opgjortes\Rentekoderne.Tra	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.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
1528	1420	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 2748 wrote to memory of 1420	2748	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	30
PID 1420 wrote to memory of 1528	1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	33
PID 1420 wrote to memory of 1528	1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	33
PID 1420 wrote to memory of 1528	1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	33
PID 1420 wrote to memory of 1528	1420	428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe	33

C:\Users\Admin\AppData\Local\Temp\428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
"C:\Users\Admin\AppData\Local\Temp\428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe"
1⤵
- Loads dropped DLL
- 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:2748
- C:\Users\Admin\AppData\Local\Temp\428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe
  "C:\Users\Admin\AppData\Local\Temp\428de4e7cbe460a1226c51dbe80cef11560239abfb0d6baa7e8664a8726e73f5.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1420 -s 68
    3⤵
    - Program crash
    PID:1528

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

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsjA584.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
\Users\Admin\AppData\Local\Temp\nsjA584.tmp\UserInfo.dll

Filesize
4KB

MD5
c22c9d7b6937b8960fba4c8a145076b2

SHA1
2e45c2dd6e5132a942fe940dccdaf771e0f9e81e

SHA256
510e466a715933499fb9d5a1753b483826b2bf89161b9d466dd2ad7e52ede2fc

SHA512
b3b93fb97bc0d16ac35a1f0e877bcf42324e19d21839b025329d1b27d8e96bc9c0cbde0a8d60b23fd0c864f62e3c287461108c6abecf53ac488de1fc16b47d6e

Download Submit
memory/1420-54-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-29-0x0000000077D26000-0x0000000077D27000-memory.dmp

Filesize
4KB

Download
memory/1420-61-0x0000000077CF0000-0x0000000077DC6000-memory.dmp

Filesize
856KB

Download
memory/1420-59-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-58-0x0000000033790000-0x0000000033A93000-memory.dmp

Filesize
3.0MB

Download
memory/1420-25-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-26-0x0000000001470000-0x00000000033D5000-memory.dmp

Filesize
31.4MB

Download
memory/1420-27-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-28-0x0000000077B00000-0x0000000077CA9000-memory.dmp

Filesize
1.7MB

Download
memory/1420-57-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-51-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-52-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1420-56-0x0000000001470000-0x00000000033D5000-memory.dmp

Filesize
31.4MB

Download
memory/1420-55-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2748-20-0x00000000031C0000-0x0000000005125000-memory.dmp

Filesize
31.4MB

Download
memory/2748-53-0x00000000031C0000-0x0000000005125000-memory.dmp

Filesize
31.4MB

Download
memory/2748-21-0x0000000077B00000-0x0000000077CA9000-memory.dmp

Filesize
1.7MB

Download
memory/2748-24-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/2748-23-0x0000000077CF0000-0x0000000077DC6000-memory.dmp

Filesize
856KB

Download
memory/2748-22-0x00000000031C0000-0x0000000005125000-memory.dmp

Filesize
31.4MB

Download

Analysis

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