guloader | 39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 01:19

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General

Target
39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe
Size 548KB
Sample240427-bpmdtsfh82
SHA256 39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d
MD5 edeb34f392872f3c9e220bc9dcf9ba86
SHA1 e9fb6ff7cd47ec7b08391f4c1ecc1e684bf28ff7
SHA512 f33bc39692838cc94ae0ed6aedddfcecb8fd564de6de0d81a258ece57eba04cb7820f1fe834e48b4e0cbce95409449514bb645e69584ad62e0439fea306af424
SSDEEP 12288:47YvE3TaaFpfEwmgfwwQxeoKGaGsIMcgLvlU2eZysZMNue:bENj7JgaRe0VN9
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Emraud = "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\\Somervillite\\').Efs;%Skraastillinger% ($Boplskommunens)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2168	wab.exe
2168	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3056	powershell.exe
2168	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3056 set thread context of 2168	3056	powershell.exe	32

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
2584	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3056	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 3056	2488	39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe	28
PID 2488 wrote to memory of 3056	2488	39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe	28
PID 2488 wrote to memory of 3056	2488	39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe	28
PID 2488 wrote to memory of 3056	2488	39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe	28
PID 3056 wrote to memory of 2632	3056	powershell.exe	30
PID 3056 wrote to memory of 2632	3056	powershell.exe	30
PID 3056 wrote to memory of 2632	3056	powershell.exe	30
PID 3056 wrote to memory of 2632	3056	powershell.exe	30
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 3056 wrote to memory of 2168	3056	powershell.exe	32
PID 2168 wrote to memory of 2888	2168	wab.exe	33
PID 2168 wrote to memory of 2888	2168	wab.exe	33
PID 2168 wrote to memory of 2888	2168	wab.exe	33
PID 2168 wrote to memory of 2888	2168	wab.exe	33
PID 2888 wrote to memory of 2584	2888	cmd.exe	35
PID 2888 wrote to memory of 2584	2888	cmd.exe	35
PID 2888 wrote to memory of 2584	2888	cmd.exe	35
PID 2888 wrote to memory of 2584	2888	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe
"C:\Users\Admin\AppData\Local\Temp\39e37a6736984b617a47818ffdbd202199c75f769821d4939f1d61dff621098d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Interlucent=Get-Content 'C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Pelletising.Art';$Sciography=$Interlucent.SubString(57898,3);.$Sciography($Interlucent)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:2632
- - 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:2168
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Emraud" /t REG_EXPAND_SZ /d "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\Somervillite\').Efs;%Skraastillinger% ($Boplskommunens)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2888
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Emraud" /t REG_EXPAND_SZ /d "%Skraastillinger% -windowstyle minimized $Boplskommunens=(Get-ItemProperty -Path 'HKCU:\Somervillite\').Efs;%Skraastillinger% ($Boplskommunens)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Size 68KB
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
SSDEEP 1536:iMveRG6BWC7T2g1wGUa5QUoaIB9ttiFJG+AOQOXl0Usvwr:feRG6BX6gUaHo9tkBHiUewr
MD5 SHA1 SHA512 SSDEEP

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 a9c1ca1cb2343aa418971ed25f42494479b394ee22b888037fbc8e0477597e54
MD5 519e7ce1c665f3f0fc42c3e052c6193b
SHA1 9eee022192a6cf830cd9065d81e87c5431485433
SHA512 91ffd041fde3f7f1af5a16a8f52900d78328ec58d67bed3da1d167e1554629e5b09ea3fb30e8cf2a4a91dda3c7ae5dab0150aca00c9439aabbd1e79f3ee17902
MD5 SHA1 SHA512

Submit Download

CabAF25.tmp

Path C:\Users\Admin\AppData\Local\Temp\CabAF25.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

Submit Download

TarAFF7.tmp

Path C:\Users\Admin\AppData\Local\Temp\TarAFF7.tmp
Size 177KB
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
SSDEEP 1536:fAo/J+lCUsTRvsqgCyqWlUDNWdm1wpSru2A0XwjY/z02DTr3rmt6mJ:f/J+qTR0XCy/dmASru2Aijbdq
MD5 SHA1 SHA512 SSDEEP

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Pelletising.Art

Path C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Pelletising.Art
Size 56KB
SHA256 de1fc8dc64b49c5ae8c2c9c45e7dd4d2aa154f845e99a8e8fa08b5abf23d38a7
MD5 19779840eecfc141420a08cb9a741962
SHA1 0f0a168bc292914da146f667557ff5f07b0f5ae5
SHA512 d3be08e433f93bafc5d53ea6e91c53e01d755bf1c61e4006aa184da35644b343bd72d0ddbee9820db107c2df212dc4a51a4e06ebf3cf6c1e45ed250f2b383723
SSDEEP 1536:M2JnexhWTLwrzAPNCVjXRFnhoMMesE5FxGFlAqfq+7:MGghWPwrMeh9b2ELxGFl77
MD5 SHA1 SHA512 SSDEEP

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Raciality.Fly

Path C:\Users\Admin\AppData\Local\salpetersyrefabrikkers\occupying\Nonsynoptic168\unvolubly\Langtrkkendes\Raciality.Fly
Size 331KB
SHA256 286b9df7b42e7f021bb5eebe1b6e00d6178f01a4b308244cabfd955cd91b5d60
MD5 4fef7ec4aa88c70e0e50af8288552883
SHA1 93fb76eb5d63d8bd92cb962e8f6ca7c8e7ae5950
SHA512 9f386415243a791b58853c00c378aa57d3aa69f3e690e452220da92d5b4888a0c35099b20ebc9672b0797bcd58091fca8d1f0bd75a616b164896531b8206b1cb
SSDEEP 6144:Vg2nMcR6xsO57WM9Z+a+Ii3D66xODvok9RaO3JtwL5gWwA76WwQK+/eKk7EcorXX:V2cR6xsOAMzlI3mHDvokHaO5U5r4QK+b
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2168-102-0x0000000001EF0000-0x000000000751F000-memory.dmp

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memory/2168-104-0x0000000000E80000-0x0000000001EE2000-memory.dmp

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memory/3056-11-0x0000000002C00000-0x0000000002C40000-memory.dmp

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memory/3056-17-0x0000000002C00000-0x0000000002C40000-memory.dmp

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memory/3056-16-0x0000000073750000-0x0000000073CFB000-memory.dmp

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memory/3056-15-0x0000000006690000-0x000000000BCBF000-memory.dmp

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memory/3056-7-0x0000000073750000-0x0000000073CFB000-memory.dmp

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memory/3056-10-0x0000000002C00000-0x0000000002C40000-memory.dmp

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memory/3056-9-0x0000000073750000-0x0000000073CFB000-memory.dmp

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memory/3056-8-0x0000000073750000-0x0000000073CFB000-memory.dmp

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