guloader | cd533d45b704ab35ca35b9162805abb28710ca25399344812fa9f8598a93b30b

General

Target

DHL_M-002567436735845755676678877988975877.exe
Size

435KB
MD5

4e1e7a26a6c1115d55293a84f36575c1
SHA1

ec727b3bd73c11995e745ff1668ad69400f97d30
SHA256

cd533d45b704ab35ca35b9162805abb28710ca25399344812fa9f8598a93b30b
SHA512

e5f70560e440068c684d95992eace1fb649b0c091230db98f61ff68a49d3ff84530351d3b619445936cd51fc694c11fa43e77d0a1f400d165fcb2e13a670bc7e
SSDEEP

6144:lxFSmlmkDp54v/qwnQ6pNwhScW/rern/ZPYdnPBzYnBAqJ1tUWz:BtFFSa4ySperRPYvAAqJ19

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2684	wab.exe
2684	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2088	powershell.exe
2684	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2088 set thread context of 2684	2088	powershell.exe	32

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\sammenryste.ini	DHL_M-002567436735845755676678877988975877.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2088	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	wab.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2088	2004	DHL_M-002567436735845755676678877988975877.exe	28
PID 2004 wrote to memory of 2088	2004	DHL_M-002567436735845755676678877988975877.exe	28
PID 2004 wrote to memory of 2088	2004	DHL_M-002567436735845755676678877988975877.exe	28
PID 2004 wrote to memory of 2088	2004	DHL_M-002567436735845755676678877988975877.exe	28
PID 2088 wrote to memory of 3052	2088	powershell.exe	30
PID 2088 wrote to memory of 3052	2088	powershell.exe	30
PID 2088 wrote to memory of 3052	2088	powershell.exe	30
PID 2088 wrote to memory of 3052	2088	powershell.exe	30
PID 2088 wrote to memory of 2684	2088	powershell.exe	32
PID 2088 wrote to memory of 2684	2088	powershell.exe	32
PID 2088 wrote to memory of 2684	2088	powershell.exe	32
PID 2088 wrote to memory of 2684	2088	powershell.exe	32
PID 2088 wrote to memory of 2684	2088	powershell.exe	32
PID 2088 wrote to memory of 2684	2088	powershell.exe	32

C:\Users\Admin\AppData\Local\Temp\DHL_M-002567436735845755676678877988975877.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_M-002567436735845755676678877988975877.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Machi=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Nit\plaskenes\Forthteller\Fibrillationen52\Nonveracity\Kreolerne.Ans';$Orichalceous=$Machi.SubString(58815,3);.$Orichalceous($Machi)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:3052
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetWindowsHookEx
    PID:2684

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

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Nit\plaskenes\Forthteller\Fibrillationen52\Nonveracity\Kreolerne.Ans

Filesize
57KB

MD5
cef01801545d5b91580cd6a4a9273144

SHA1
4ba951133e407bd0d6b0447d216528200aff68b9

SHA256
f0f42ea894ea592f55fd42f05df638a1c0eb54f966671817ba67ac78d6da3345

SHA512
57a39ee84f50065923d8441539da07a6ee49cc9e75e32d4f5b293c7d5a40b5f0cdf9b2e63fa29fbb279c86ad800ff4e8b72ed524d849e0ca423e61d3d9e0ebca

Download Submit
C:\Users\Admin\AppData\Local\Temp\Nit\plaskenes\Forthteller\Fibrillationen52\Nonveracity\Spndkrafts.Fla

Filesize
344KB

MD5
de7716e2bacc1169dfe5f7917ef0dbad

SHA1
d3caf742f49f6dc4bd44c5bc0da1df56bb3926b0

SHA256
99087333e7cd63b9ddb06469ec26b0fd17c324d046705c1cefb95705ac1a893a

SHA512
9ce185d479cd1d0275481aa28c6980f72faf2a1286ae725cd908a086d71459d5f475319806a2ba850869f7738bf0b6a2ba228420518ede82295b7349f431137d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar71DD.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
memory/2088-6-0x0000000073BA0000-0x000000007414B000-memory.dmp

Filesize
5.7MB

Download
memory/2088-7-0x0000000002CC0000-0x0000000002D00000-memory.dmp

Filesize
256KB

Download
memory/2088-8-0x0000000002CC0000-0x0000000002D00000-memory.dmp

Filesize
256KB

Download
memory/2088-12-0x0000000006650000-0x000000000B87C000-memory.dmp

Filesize
82.2MB

Download
memory/2088-13-0x0000000073BA0000-0x000000007414B000-memory.dmp

Filesize
5.7MB

Download
memory/2088-14-0x0000000002CC0000-0x0000000002D00000-memory.dmp

Filesize
256KB

Download
memory/2684-69-0x0000000001ED0000-0x00000000070FC000-memory.dmp

Filesize
82.2MB

Download

Analysis

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