guloader | 6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603

General

Target

6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe
Size

549KB
MD5

4621fea50e1982e6f753efe7d1be2b35
SHA1

46072b07bfa96583ed03149a04411cbcf04eadf9
SHA256

6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603
SHA512

301e380d9e207caa7e994b251e2018207851a32f0c1850b3de669742c9d640d5254640d972e0143bc99e8cb2e3728bb7878814e66498928ff777d26c9bd206f5
SSDEEP

12288:8stfWr2zXogHMSwOdJ1JUTrNuVwik2Mx/DvMAM++:8st+r2zXZ/dJyrNuuik2yDc++

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Overfondle.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	Overfondle.exe

Loads dropped DLL 2 IoCs

Processes:

6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exeOverfondle.exe

pid process

228 6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe
4816 Overfondle.exe

pid	process
228	6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe
4816	Overfondle.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\Hakkebrttet = "%elaf% -windowstyle minimized $Ultramicrotome=(Get-ItemProperty -Path 'HKCU:\\noncoherent\\').Skvadredes;%elaf% ($Ultramicrotome)"	reg.exe

Drops file in System32 directory 1 IoCs

Processes:

6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe

description ioc process

File created C:\Windows\SysWOW64\psiloses.lnk 6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exeOverfondle.exe

pid process

3272 powershell.exe
4816 Overfondle.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3272 set thread context of 4816 3272 powershell.exe Overfondle.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\SysWOW64\psiloses.lnk	6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe

description	pid	process	target process
PID 3272 set thread context of 4816	3272	powershell.exe	Overfondle.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Overfondle.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\Overfondle.exe	nsis_installer_2

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

5024 reg.exe

pid	process
5024	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exe

pid	process
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe
3272	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

3272 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3272 powershell.exe

description	pid	process
Token: SeDebugPrivilege	3272	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exepowershell.exeOverfondle.execmd.exe

description	pid	process	target process
PID 228 wrote to memory of 3272	228	6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe	powershell.exe
PID 228 wrote to memory of 3272	228	6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe	powershell.exe
PID 228 wrote to memory of 3272	228	6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe	powershell.exe
PID 3272 wrote to memory of 5024	3272	powershell.exe	cmd.exe
PID 3272 wrote to memory of 5024	3272	powershell.exe	cmd.exe
PID 3272 wrote to memory of 5024	3272	powershell.exe	cmd.exe
PID 3272 wrote to memory of 4816	3272	powershell.exe	Overfondle.exe
PID 3272 wrote to memory of 4816	3272	powershell.exe	Overfondle.exe
PID 3272 wrote to memory of 4816	3272	powershell.exe	Overfondle.exe
PID 3272 wrote to memory of 4816	3272	powershell.exe	Overfondle.exe
PID 3272 wrote to memory of 4816	3272	powershell.exe	Overfondle.exe
PID 4816 wrote to memory of 4056	4816	Overfondle.exe	cmd.exe
PID 4816 wrote to memory of 4056	4816	Overfondle.exe	cmd.exe
PID 4816 wrote to memory of 4056	4816	Overfondle.exe	cmd.exe
PID 4056 wrote to memory of 5024	4056	cmd.exe	reg.exe
PID 4056 wrote to memory of 5024	4056	cmd.exe	reg.exe
PID 4056 wrote to memory of 5024	4056	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe
"C:\Users\Admin\AppData\Local\Temp\6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:228

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -windowstyle hidden "$Indeterminative=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Moviedom230\Enforcedly251\Afvrgningernes.Ign37';$Introducerer=$Indeterminative.SubString(18884,3);.$Introducerer($Indeterminative)"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3272

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "set /A 1^^0"
3⤵
PID:5024

C:\Users\Admin\AppData\Local\Temp\Overfondle.exe
"C:\Users\Admin\AppData\Local\Temp\Overfondle.exe"
3⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:4816

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Hakkebrttet" /t REG_EXPAND_SZ /d "%elaf% -windowstyle minimized $Ultramicrotome=(Get-ItemProperty -Path 'HKCU:\noncoherent\').Skvadredes;%elaf% ($Ultramicrotome)"
4⤵
- Suspicious use of WriteProcessMemory
PID:4056

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Hakkebrttet" /t REG_EXPAND_SZ /d "%elaf% -windowstyle minimized $Ultramicrotome=(Get-ItemProperty -Path 'HKCU:\noncoherent\').Skvadredes;%elaf% ($Ultramicrotome)"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:5024

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=4072 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:3176

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Moviedom230\Enforcedly251\Afvrgningernes.Ign37
Filesize
73KB

MD5
2a4d239948b7ba6c05b6dc3d6a4bd41d

SHA1
ce9c6d7cabfa263b0af02023beaa4938d2dba4f5

SHA256
490fafe9835e76b1780427bdfc6f32529d04c81630a5678c6af77b3d46a0276a

SHA512
d7205fd1293aba4310773546c50da78d0f9c0ff37dfc0efbcc9928666a556dca634c0ec9dbc01f70bf5cb071c547bee36a1be40ff705a55d41885fbbd1457a57

Download Submit
C:\Users\Admin\AppData\Local\Temp\Moviedom230\Enforcedly251\Aphthong.cal
Filesize
310KB

MD5
b5464e0d8950a57546e96bb94f6c2cf1

SHA1
b31d124005d806419adfb7f2f055f959c406b97a

SHA256
795e6773d208f28d17ae68b6a0d793a568b306764666702bb9591faf0fb85ec2

SHA512
f10bc9334f3b4afa3d58ad7f87d0c6874dcacb3b2eabc1f5ae047ae786fe4c7c0e79ee7fd44640202ab0cb0e244e67bc038a3f2173a729feed3090f8e6d9f3ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\Overfondle.exe
Filesize
549KB

MD5
4621fea50e1982e6f753efe7d1be2b35

SHA1
46072b07bfa96583ed03149a04411cbcf04eadf9

SHA256
6b2874507fc8b7782d11f202840850ba6edd8befbb8c163c4d53775fb8d20603

SHA512
301e380d9e207caa7e994b251e2018207851a32f0c1850b3de669742c9d640d5254640d972e0143bc99e8cb2e3728bb7878814e66498928ff777d26c9bd206f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j4vutyct.4y2.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsv684.tmp\nsExec.dll
Filesize
6KB

MD5
5aa38904acdcc21a2fb8a1d30a72d92f

SHA1
a9ce7d1456698921791db91347dba0489918d70c

SHA256
10675f13abaee592f14382349aa35d82fb52aab4e27eef61d0c83dec1f6b73da

SHA512
f04740da561d7cd0dea5e839c9e1c339d4a3e63944d3566c94c921a3d170a69918a32dff3f3b43f13d55cc25a2dbb4c21104f062c324308ac5104179766402a3

Download Submit
memory/3272-27-0x0000000006310000-0x000000000632E000-memory.dmp

Filesize
120KB

Download
memory/3272-40-0x0000000073F70000-0x0000000074720000-memory.dmp

Filesize
7.7MB

Download
memory/3272-16-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/3272-14-0x00000000052A0000-0x00000000052C2000-memory.dmp

Filesize
136KB

Download
memory/3272-22-0x0000000005D00000-0x0000000006054000-memory.dmp

Filesize
3.3MB

Download
memory/3272-13-0x0000000005620000-0x0000000005C48000-memory.dmp

Filesize
6.2MB

Download
memory/3272-28-0x0000000006410000-0x000000000645C000-memory.dmp

Filesize
304KB

Download
memory/3272-29-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-31-0x0000000006810000-0x000000000682A000-memory.dmp

Filesize
104KB

Download
memory/3272-30-0x00000000072B0000-0x0000000007346000-memory.dmp

Filesize
600KB

Download
memory/3272-32-0x0000000006860000-0x0000000006882000-memory.dmp

Filesize
136KB

Download
memory/3272-33-0x0000000007970000-0x0000000007F14000-memory.dmp

Filesize
5.6MB

Download
memory/3272-12-0x0000000002C80000-0x0000000002CB6000-memory.dmp

Filesize
216KB

Download
memory/3272-35-0x00000000085A0000-0x0000000008C1A000-memory.dmp

Filesize
6.5MB

Download
memory/3272-37-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-11-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-39-0x0000000007840000-0x0000000007844000-memory.dmp

Filesize
16KB

Download
memory/3272-15-0x0000000005340000-0x00000000053A6000-memory.dmp

Filesize
408KB

Download
memory/3272-41-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-43-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-44-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-45-0x0000000008C20000-0x000000000B7EC000-memory.dmp

Filesize
43.8MB

Download
memory/3272-46-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3272-47-0x0000000008C20000-0x000000000B7EC000-memory.dmp

Filesize
43.8MB

Download
memory/3272-48-0x0000000008C20000-0x000000000B7EC000-memory.dmp

Filesize
43.8MB

Download
memory/3272-49-0x00000000779D1000-0x0000000077AF1000-memory.dmp

Filesize
1.1MB

Download
memory/3272-10-0x0000000073F70000-0x0000000074720000-memory.dmp

Filesize
7.7MB

Download
memory/3272-69-0x0000000008C20000-0x000000000B7EC000-memory.dmp

Filesize
43.8MB

Download
memory/3272-68-0x0000000073F70000-0x0000000074720000-memory.dmp

Filesize
7.7MB

Download
memory/4816-54-0x0000000077A58000-0x0000000077A59000-memory.dmp

Filesize
4KB

Download
memory/4816-55-0x00000000779D1000-0x0000000077AF1000-memory.dmp

Filesize
1.1MB

Download
memory/4816-56-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4816-57-0x0000000001660000-0x000000000422C000-memory.dmp

Filesize
43.8MB

Download
memory/4816-53-0x0000000001660000-0x000000000422C000-memory.dmp

Filesize
43.8MB

Download
memory/4816-52-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads