guloader | de894dce10bfc232aea2d9fa74e16c298d22caf5931eafec5e6476d16c33d983

General

Target

Спецификация контракта Казахстан – Российская Федерация.exe
Size

517KB
MD5

a6b7d5f2bfefda4b0663a7ba6bbc041c
SHA1

c5f5c00c55140cdddd198c32e5639ab41c0166db
SHA256

fc682a6fc3ac615b76230f7d1418e9d1b0f325e8d4a23df978453d07c9ce5f43
SHA512

9df274c79609c787836563ce606b0c5b4aba8a8e00a27ffc6b98cc1a9e66dfb6d4f276f4495194cfe471661ce30138439bb96b46d6f2dedd82e1494078187bd3
SSDEEP

12288:fzA/ggggjiOW6Ype3OIo+X2zvysLOxwph8Ow+:U/ggggji56Ykq+XoysLMo8Ow+

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 = "%Udbytterigst% -windowstyle minimized $Genopbygget=(Get-ItemProperty -Path 'HKCU:\\Kapitalvrdien\\').Nonoptical;%Udbytterigst% ($Genopbygget)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2568	wab.exe
2568	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2860	powershell.exe
2568	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 2568	2860	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
1984	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe
2860	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2860	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 2860	1176	Спецификация контракта Казахстан – Российская Федерация.exe	28
PID 1176 wrote to memory of 2860	1176	Спецификация контракта Казахстан – Российская Федерация.exe	28
PID 1176 wrote to memory of 2860	1176	Спецификация контракта Казахстан – Российская Федерация.exe	28
PID 1176 wrote to memory of 2860	1176	Спецификация контракта Казахстан – Российская Федерация.exe	28
PID 2860 wrote to memory of 2508	2860	powershell.exe	30
PID 2860 wrote to memory of 2508	2860	powershell.exe	30
PID 2860 wrote to memory of 2508	2860	powershell.exe	30
PID 2860 wrote to memory of 2508	2860	powershell.exe	30
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2860 wrote to memory of 2568	2860	powershell.exe	34
PID 2568 wrote to memory of 1964	2568	wab.exe	35
PID 2568 wrote to memory of 1964	2568	wab.exe	35
PID 2568 wrote to memory of 1964	2568	wab.exe	35
PID 2568 wrote to memory of 1964	2568	wab.exe	35
PID 1964 wrote to memory of 1984	1964	cmd.exe	37
PID 1964 wrote to memory of 1984	1964	cmd.exe	37
PID 1964 wrote to memory of 1984	1964	cmd.exe	37
PID 1964 wrote to memory of 1984	1964	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\Спецификация контракта Казахстан – Российская Федерация.exe
"C:\Users\Admin\AppData\Local\Temp\Спецификация контракта Казахстан – Российская Федерация.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1176
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Deklasstrr=Get-Content 'C:\Users\Admin\AppData\Roaming\skabiose\slgtsarvens\prender\Fellator\Paletter\Lowbyte\Avanceringen157\Rekrt.Bal';$Tapetal=$Deklasstrr.SubString(7309,3);.$Tapetal($Deklasstrr)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "set /A 1^^0"
    3⤵
    PID:2508
- - 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:2568
  - - 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 "%Udbytterigst% -windowstyle minimized $Genopbygget=(Get-ItemProperty -Path 'HKCU:\Kapitalvrdien\').Nonoptical;%Udbytterigst% ($Genopbygget)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1964
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Udbytterigst% -windowstyle minimized $Genopbygget=(Get-ItemProperty -Path 'HKCU:\Kapitalvrdien\').Nonoptical;%Udbytterigst% ($Genopbygget)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:1984

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
7832fe1a28d3669ee1428e72ba56c2ea

SHA1
173ba6f978c4abf6565b11ce562a2bf16817a2f0

SHA256
257e7326dba148110ab034befc1911943c2746268371351db993a65884a98821

SHA512
1e919c199906dddbc2854ceb4a5274c869ee2b46420587c9d27b5529c5aff3968faf75d4e1f3197e18267ddc56cbfeb16ead094f09e6146bb0e933b0b8b223b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab17A8.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1935.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Roaming\skabiose\slgtsarvens\prender\Fellator\Paletter\Lowbyte\Avanceringen157\Patentets.Pri204

Filesize
333KB

MD5
fe3b114b11116efde2078f4754e719a4

SHA1
a85b985689fd1866fe055a1b842b76248ad82a2e

SHA256
78083b10cd94d81830dbe5e5187c765c82f2d7f1a7c98b0debb87ac6689a8506

SHA512
bfcf02b0c4cda208002d9a8d3ebd4525c4fd64ef86d57f8bde16a577778c3d4cbe62a35be18db75b2d353746dc335b5179153bb8c1c817ab5b77f6aa151c5423

Download Submit
C:\Users\Admin\AppData\Roaming\skabiose\slgtsarvens\prender\Fellator\Paletter\Lowbyte\Avanceringen157\Rekrt.Bal

Filesize
56KB

MD5
2354362f1cb0a39baef7da6969832048

SHA1
ed2a3597370eea69ea017af285c99d1b60556a0c

SHA256
f5129323c012e960d4b1a619a95757cc81675275e4c795883004c54da5ed3bb2

SHA512
a09dbc69627bd42180fe9cf8fc7234798e30296de3a2b35a0c071e7507d9a63a5dc3f0873183a8bd93e929e05ea5d647323cf2905f4550cfb8cc5ee07353999a

Download Submit
memory/2568-27-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2568-124-0x0000000002090000-0x0000000007931000-memory.dmp

Filesize
88.6MB

Download
memory/2568-125-0x00000000779F0000-0x0000000077AC6000-memory.dmp

Filesize
856KB

Download
memory/2568-29-0x00000000779F0000-0x0000000077AC6000-memory.dmp

Filesize
856KB

Download
memory/2568-28-0x0000000077A26000-0x0000000077A27000-memory.dmp

Filesize
4KB

Download
memory/2860-15-0x0000000002330000-0x0000000002370000-memory.dmp

Filesize
256KB

Download
memory/2860-19-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2860-22-0x0000000005E10000-0x0000000005F10000-memory.dmp

Filesize
1024KB

Download
memory/2860-24-0x0000000006340000-0x000000000BBE1000-memory.dmp

Filesize
88.6MB

Download
memory/2860-25-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2860-26-0x00000000779F0000-0x0000000077AC6000-memory.dmp

Filesize
856KB

Download
memory/2860-20-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2860-21-0x0000000002330000-0x0000000002370000-memory.dmp

Filesize
256KB

Download
memory/2860-18-0x00000000050F0000-0x00000000050F4000-memory.dmp

Filesize
16KB

Download
memory/2860-16-0x0000000005E10000-0x0000000005F10000-memory.dmp

Filesize
1024KB

Download
memory/2860-8-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download
memory/2860-12-0x0000000002330000-0x0000000002370000-memory.dmp

Filesize
256KB

Download
memory/2860-11-0x0000000002330000-0x0000000002370000-memory.dmp

Filesize
256KB

Download
memory/2860-10-0x0000000002330000-0x0000000002370000-memory.dmp

Filesize
256KB

Download
memory/2860-9-0x00000000740B0000-0x000000007465B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads