agenttesla | e67bdb94ed97481a1f6fa8790187a39e6f7641ae65f4ef0e601ba9c6da0cfa87

General

Target

JaffaCakes118_19dec01dd443f8b82e82a5f5f260be0b.ps1
Size

355KB
MD5

19dec01dd443f8b82e82a5f5f260be0b
SHA1

e77d6ad6acacaccc30dae50608b2c5721ffda526
SHA256

e67bdb94ed97481a1f6fa8790187a39e6f7641ae65f4ef0e601ba9c6da0cfa87
SHA512

9cd0189d07a88b8c11e21c9c796346548cafab4a5f2f98eed7c07ddd40f23921b31e20002ac9b62c29cb9d26037efb9cf29c2594bac6875d85ef3eb7f53cd543
SSDEEP

1536:EUz92i3yJc81fdDuJ8V+5FocQfb1xgHXuCL/iv6+y7X+mw/ie/uNVixz7+TmS5Pt:NsG

Score

10^/10

agenttesla collection credential_access discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

http://103.125.190.248/j/p11l/mawa/0b5eace2c983ebeba55b.php

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/1596-28-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegAsm.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1960 set thread context of 1596	1960	powershell.exe	87

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1960	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1960	powershell.exe
1960	powershell.exe
1960	powershell.exe
1960	powershell.exe
1596	RegAsm.exe
1596	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	powershell.exe
Token: SeDebugPrivilege	1596	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1596	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 3512	1960	powershell.exe	84
PID 1960 wrote to memory of 3512	1960	powershell.exe	84
PID 3512 wrote to memory of 2764	3512	csc.exe	85
PID 3512 wrote to memory of 2764	3512	csc.exe	85
PID 1960 wrote to memory of 4948	1960	powershell.exe	86
PID 1960 wrote to memory of 4948	1960	powershell.exe	86
PID 1960 wrote to memory of 4948	1960	powershell.exe	86
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87
PID 1960 wrote to memory of 1596	1960	powershell.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19dec01dd443f8b82e82a5f5f260be0b.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\eoxbjg42\eoxbjg42.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3512
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES376.tmp" "c:\Users\Admin\AppData\Local\Temp\eoxbjg42\CSC49CAF11E543046F8955B5112ACDE60D6.TMP"
    3⤵
    PID:2764
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4948
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RES376.tmp

Filesize
1KB

MD5
bd996dad6cb12c18134558e4b9dc3c25

SHA1
e2635e61f8f59027668e40e100b251f0e4af6951

SHA256
8c9e83bad1144e1d213209518c0bfa124386e40c5d45734f929d3fa4f9bf62ce

SHA512
bbcdf54336fafe9732c3a3e1e83781b6e7230a9bc7a5631c36b5972716dd078e5271aeb186bc7c4d8641b860a11ee0842ea4d6c8debeb050798b4e0380572406

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_01bewymu.1jb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\eoxbjg42\eoxbjg42.dll

Filesize
13KB

MD5
5be714167dd4d1a75a390b0752665429

SHA1
02bc94448b6c0455c3fdb514773ee8da66e60d26

SHA256
72ec1970d31546d485fda433f15f27905cc01970671757ac202d0284c298b281

SHA512
dd13fed22e5849e1480e374bf8d4ef851fc2c0d6c65c4019a5fa5dd44355bdf591af5ea20074f993f8f2f6c1a28877aa376508dca0d313d2d0dcd8a0eaab365c

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\eoxbjg42\CSC49CAF11E543046F8955B5112ACDE60D6.TMP

Filesize
652B

MD5
b8b386c81ef2b0c2933a296f9cb428ec

SHA1
dcaa5eccd9a860f88a1f8ea7000d652dead5637e

SHA256
049d2042c6d495d6fb36ec26a5c00dcc7f17235414cbb5de28e5e4bf3d7aab01

SHA512
1c02345c75abeae818d41e5afc298c736759dd9c8049897821a392855297742b38ba7624c9e99d4ea3a661b1461f397cf0200150b1321ce4a4fd02d942740ca8

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\eoxbjg42\eoxbjg42.0.cs

Filesize
13KB

MD5
e03b1e7ba7f1a53a7e10c0fd9049f437

SHA1
3bb851a42717eeb588eb7deadfcd04c571c15f41

SHA256
3ca2d456cf2f8d781f2134e1481bd787a9cb6f4bcaa2131ebbe0d47a0eb36427

SHA512
a098a8e2a60a75357ee202ed4bbe6b86fa7b2ebae30574791e0d13dcf3ee95b841a14b51553c23b95af32a29cc2265afc285b3b0442f0454ea730de4d647383f

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\eoxbjg42\eoxbjg42.cmdline

Filesize
327B

MD5
4b805c8a181bcd8c15dd0413be212e6a

SHA1
6d875a1e249a529df16bb23c5770f9c64c22b3f0

SHA256
5fc62038a70e6277e3b041e0ae0d2405005c9dcaa0c743fbb21071719d2307bb

SHA512
599d881dff8a34e7814e5bb84cee13ec35c72c12b0f3beb3e3a94b5989d0c342a954e4db013db17dbea2d3a1941303e4309afb30c4f91c69948a88cd6b2d2064

Download Submit
memory/1596-33-0x0000000004FE0000-0x0000000005072000-memory.dmp

Filesize
584KB

Download
memory/1596-32-0x0000000005680000-0x0000000005C24000-memory.dmp

Filesize
5.6MB

Download
memory/1596-39-0x0000000002620000-0x000000000262A000-memory.dmp

Filesize
40KB

Download
memory/1596-38-0x00000000026A0000-0x00000000026F0000-memory.dmp

Filesize
320KB

Download
memory/1596-36-0x0000000005FE0000-0x0000000006046000-memory.dmp

Filesize
408KB

Download
memory/1596-35-0x0000000005160000-0x0000000005178000-memory.dmp

Filesize
96KB

Download
memory/1596-28-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1596-34-0x00000000052A0000-0x000000000533C000-memory.dmp

Filesize
624KB

Download
memory/1960-10-0x0000014E6FD50000-0x0000014E6FD72000-memory.dmp

Filesize
136KB

Download
memory/1960-0-0x00007FFB253C3000-0x00007FFB253C5000-memory.dmp

Filesize
8KB

Download
memory/1960-31-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

Filesize
10.8MB

Download
memory/1960-26-0x0000014E6FFC0000-0x0000014E6FFCA000-memory.dmp

Filesize
40KB

Download
memory/1960-13-0x0000014E70180000-0x0000014E701F6000-memory.dmp

Filesize
472KB

Download
memory/1960-11-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

Filesize
10.8MB

Download
memory/1960-12-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

Filesize
10.8MB

Download

Analysis

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