guloader | 5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930

Analysis

max time kernel
153s
max time network
158s
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 21:44

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General

Target

5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe
Size

655KB
MD5

b1635b455bd73cb6c547728cb1d1fca1
SHA1

5e016cc09d0c5f8429c6955bc3bfd9a07d25741d
SHA256

5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930
SHA512

9829dc60d520c945c1aef68dd6942a1eca4cc0c4fe8dc092e20bdade413ffe412a58e376be446e64cc479cb4e2d872828336fbc8742189d20656900bdcb97795
SSDEEP

6144:z9KOQS4B4GMSGJpFhcbvDIZDAPGQzvOWECsjqfn/HUgcwViw6977fdRw9wQZe:zsB4GOcbrKDgTzvOWlEgcwVh693fdWY

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

1760 powershell.exe

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

pid	process
1760	powershell.exe

Loads dropped DLL 4 IoCs

Processes:

5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe

pid	process
3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe
3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe
3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe
3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.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\Startup key = "%Flgestningens% -windowstyle minimized $Staturer=(Get-ItemProperty -Path 'HKCU:\\Uigennemsigtigt159\\').Virelai2;%Flgestningens% ($Staturer)"	reg.exe

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

Web Service
T1102

Processes:

flow ioc

54 drive.google.com
55 drive.google.com
Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

Processes:

wab.exe

pid process

1748 wab.exe
1748 wab.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exewab.exe

pid process

1760 powershell.exe
1748 wab.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1760 set thread context of 1748 1760 powershell.exe wab.exe
Drops file in Windows directory 1 IoCs

Processes:

5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe

description ioc process

File opened for modification C:\Windows\Fonts\anorakkerne.ini 5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.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

3804 reg.exe
5012 reg.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exe

pid process

1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
1760 powershell.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

1760 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1760 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wab.exe

pid process

1748 wab.exe

flow	ioc
54	drive.google.com
55	drive.google.com

pid	process
1748	wab.exe
1748	wab.exe

pid	process
1760	powershell.exe
1748	wab.exe

description	pid	process	target process
PID 1760 set thread context of 1748	1760	powershell.exe	wab.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\anorakkerne.ini	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe

pid	process
3804	reg.exe
5012	reg.exe

pid	process
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe

pid	process
1760	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1760	powershell.exe

pid	process
1748	wab.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exepowershell.exewab.execmd.execmd.exe

description	pid	process	target process
PID 3108 wrote to memory of 1760	3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe	powershell.exe
PID 3108 wrote to memory of 1760	3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe	powershell.exe
PID 3108 wrote to memory of 1760	3108	5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe	powershell.exe
PID 1760 wrote to memory of 1748	1760	powershell.exe	wab.exe
PID 1760 wrote to memory of 1748	1760	powershell.exe	wab.exe
PID 1760 wrote to memory of 1748	1760	powershell.exe	wab.exe
PID 1760 wrote to memory of 1748	1760	powershell.exe	wab.exe
PID 1760 wrote to memory of 1748	1760	powershell.exe	wab.exe
PID 1748 wrote to memory of 1392	1748	wab.exe	cmd.exe
PID 1748 wrote to memory of 1392	1748	wab.exe	cmd.exe
PID 1748 wrote to memory of 1392	1748	wab.exe	cmd.exe
PID 1392 wrote to memory of 3804	1392	cmd.exe	reg.exe
PID 1392 wrote to memory of 3804	1392	cmd.exe	reg.exe
PID 1392 wrote to memory of 3804	1392	cmd.exe	reg.exe
PID 1748 wrote to memory of 3140	1748	wab.exe	cmd.exe
PID 1748 wrote to memory of 3140	1748	wab.exe	cmd.exe
PID 1748 wrote to memory of 3140	1748	wab.exe	cmd.exe
PID 3140 wrote to memory of 5012	3140	cmd.exe	reg.exe
PID 3140 wrote to memory of 5012	3140	cmd.exe	reg.exe
PID 3140 wrote to memory of 5012	3140	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe
"C:\Users\Admin\AppData\Local\Temp\5ca9895bde47eec2e17d34d058e32f699ea0501b6964916ddaf490cfda668930.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3108

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -windowstyle hidden "$Skyldraadet48=Get-Content 'C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Dicaeidae.Gle';$Spaciotemporal=$Skyldraadet48.SubString(71979,3);.$Spaciotemporal($Skyldraadet48)"
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:1760

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:1748

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 "%Flgestningens% -windowstyle minimized $Staturer=(Get-ItemProperty -Path 'HKCU:\Uigennemsigtigt159\').Virelai2;%Flgestningens% ($Staturer)"
4⤵
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Flgestningens% -windowstyle minimized $Staturer=(Get-ItemProperty -Path 'HKCU:\Uigennemsigtigt159\').Virelai2;%Flgestningens% ($Staturer)"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:3804

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:3140

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:5012

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=2756 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:3920

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

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

MD5
a5220a3b507923129a56afba0282ce7f

SHA1
4d22b8f30684a7f4cc7591f819cb431ba94ceb2a

SHA256
a9e3ed4ddf62bf66abba3636fa12c08bb28b09315a5806be3a0cebb4fcc866e3

SHA512
25cd5e7552fdab127c0e049a8b47420dfd79dc396d052247f4051b4c9ddce7e407528afbb7a94ae993001903d4c1c798ae2f00e95f0aae8d01fd9e1349b36894

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_05d2tz1q.eki.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj1BB2.tmp\AdvSplash.dll
Filesize
6KB

MD5
6def2cf3daf850acdc1a3e7340a439c4

SHA1
95d0d26f60cd5af697502cd5e53a54913ab188fb

SHA256
3ec3cf21a99ab0533ec2c451df3b5542733f70b972089d5c321ad7ae3b87d175

SHA512
16b1cf4783284d4a1282c569f5c416c713b4b339efcd4d3948bdf7da2194c597bd732d07ba9fabafcab323ba8c8da68845d4435ab9d1916b1810087ee1f5c413

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj1BB2.tmp\BgImage.dll
Filesize
7KB

MD5
2bb17d45e5ad92053ce1e500408dd8a9

SHA1
f5d3a7ee6e28df532e9ce33976c92ff30a5665e4

SHA256
71ce676703dad028e4083e6b960b1ed89885877079d46d5021506eaa6d99db53

SHA512
efdcb476b9b9b5691fe6b9cd77ecbe48d50c6683da01fd51c6b428cc262528fb3dcd295abe28718321b2307b0e032fcb599588f1eb00a93fd9e6a1f7b322b41f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj1BB2.tmp\UserInfo.dll
Filesize
4KB

MD5
8ef0e4eb7c89cdd2b552de746f5e2a53

SHA1
820f681e7cec409a02b194a487d1c8af1038acf0

SHA256
41293b9f6588e0fbdc8fcf2a9bd8e2b244cd5ff038fc13033378da337219c9dc

SHA512
a68533e8a19637d0d44219549b24baba0dc4824424842f125600fda3edcafc4bb6bb340d57a00815f262d82373b440d58d6e4e5b2ceb29bb3f6bc4cbde66c3c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj1BB2.tmp\nsExec.dll
Filesize
6KB

MD5
c129bc26a26be6f5816a03520bb37833

SHA1
18100042155f948301701744b131c516bf26ddb8

SHA256
d3694fa0503158194129d113fcc1c83177ff5a5f93d898ce0bcfe9ce12f06bf4

SHA512
dbe79859c41e00a6e951cee889e7f0de29a712792fb531662285a2d6e384884518c7d5d983894c185b3d31d81213d2477cf4576b0114d352b759fe07a1704e63

Download Submit
C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Dicaeidae.Gle
Filesize
70KB

MD5
3cb12e501d2c790546fa8c72d66c2f75

SHA1
b4cefc4cc65317033b389e7c5cad6f049ddd9bc1

SHA256
f4279bda3166ee49b35f96f2a16584496cfdf56812948787b206a99c4438b55f

SHA512
05b150c4ecce9177cbea741ef18327727b5d619d0bd820a70be61045a191494dcf5cf856e3b3a426ed4105e9b4464c24fca2977ba2ff9c44317c879594e9b3d8

Download Submit
C:\Users\Admin\AppData\Roaming\Odontiasis\Goatishness\Outtells.Coe
Filesize
340KB

MD5
7464902d05e069110750f0aef5ada538

SHA1
1007755bcc362e3dcf13ce3f33cdb1f53e75cf20

SHA256
c6683aca973aff7026a47c6ad730be8b2c75462cc35aee3f77ba4082f885b583

SHA512
dcaf2716b37728a47f905054f98caf79d90818f695f63a00351d29f6089f0b0bc69d4b887b17a4a771d54b8fda9b46daf6e3c957b89199065ffeeef31687b4a2

Download Submit
C:\Users\Admin\Pictures\slukningen.lnk
Filesize
990B

MD5
faf80cba22b19349c3e786b2a5204ce2

SHA1
e1cd2d6388939a6daa3735543dcb372d2e6fd8e5

SHA256
e205c174286ea2f6c2fe96e4958aa2e95cfed7f94d0c3543e9a4c8b8d44d96ab

SHA512
ecc018c5a73f9358415bc0eb05ecb324a8b6189530c16370e12a52c345450efa083dc3cae0812ae41472d62977e2f17dadf8fd190fc1e54e127870937a88f53b

Download Submit
memory/1748-239-0x0000000076F51000-0x0000000077071000-memory.dmp

Filesize
1.1MB

Download
memory/1748-220-0x0000000076FD8000-0x0000000076FD9000-memory.dmp

Filesize
4KB

Download
memory/1748-219-0x0000000076F51000-0x0000000077071000-memory.dmp

Filesize
1.1MB

Download
memory/1748-221-0x0000000076F51000-0x0000000077071000-memory.dmp

Filesize
1.1MB

Download
memory/1748-231-0x0000000000770000-0x00000000019C4000-memory.dmp

Filesize
18.3MB

Download
memory/1748-235-0x00000000019D0000-0x0000000006496000-memory.dmp

Filesize
74.8MB

Download
memory/1760-203-0x00000000067D0000-0x00000000067F2000-memory.dmp

Filesize
136KB

Download
memory/1760-212-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-200-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-201-0x0000000007200000-0x0000000007296000-memory.dmp

Filesize
600KB

Download
memory/1760-202-0x0000000006780000-0x000000000679A000-memory.dmp

Filesize
104KB

Download
memory/1760-198-0x00000000061D0000-0x00000000061EE000-memory.dmp

Filesize
120KB

Download
memory/1760-204-0x0000000007850000-0x0000000007DF4000-memory.dmp

Filesize
5.6MB

Download
memory/1760-193-0x0000000005C50000-0x0000000005FA4000-memory.dmp

Filesize
3.3MB

Download
memory/1760-206-0x0000000008480000-0x0000000008AFA000-memory.dmp

Filesize
6.5MB

Download
memory/1760-208-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-186-0x0000000005B70000-0x0000000005BD6000-memory.dmp

Filesize
408KB

Download
memory/1760-210-0x00000000734FE000-0x00000000734FF000-memory.dmp

Filesize
4KB

Download
memory/1760-211-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-199-0x0000000006430000-0x000000000647C000-memory.dmp

Filesize
304KB

Download
memory/1760-214-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-215-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-216-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-217-0x0000000008B00000-0x000000000D5C6000-memory.dmp

Filesize
74.8MB

Download
memory/1760-218-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-187-0x0000000005BE0000-0x0000000005C46000-memory.dmp

Filesize
408KB

Download
memory/1760-185-0x0000000005280000-0x00000000052A2000-memory.dmp

Filesize
136KB

Download
memory/1760-184-0x0000000005390000-0x00000000059B8000-memory.dmp

Filesize
6.2MB

Download
memory/1760-183-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-182-0x0000000002C70000-0x0000000002CA6000-memory.dmp

Filesize
216KB

Download
memory/1760-181-0x00000000734F0000-0x0000000073CA0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-180-0x00000000734FE000-0x00000000734FF000-memory.dmp

Filesize
4KB

Download