agenttesla | b25050da3db1fef64eb447fdbcd2a4c2248fc32a7be362cea35094449250381f

Analysis

max time kernel
61s
max time network
123s
platform
windows7_x64
resource
win7-20220331-en
submitted
12/04/2022, 15:31

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General

Target
CCF_008089.exe
Size 858KB
Sample220412-sx2bdsdaer
SHA256 b25050da3db1fef64eb447fdbcd2a4c2248fc32a7be362cea35094449250381f
MD5 ae7bcfcb1988e2f5d6049a69fa62660f
SHA1 973086c5da21d7a88b8540e8c6c5f846c85fb754
SHA512 ac68cd387bd682661aa17642cbf841122c40e1709f7e75389ad5e4901ce26280efcc908c15c5245fe1079944766d00a436632b592587ea9f0d30faefc3910a6a
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.majulah.com.sg
Port
587
Username
[email protected]
Password
P@ssword12345

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.majulah.com.sg
Port
587
Username
[email protected]
Password
P@ssword12345
Email to
[email protected]

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	CCF_008089.exe

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
T1081
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
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CCF_008089.exe
Key opened	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CCF_008089.exe
Key opened	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CCF_008089.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1456 set thread context of 436	1456	CCF_008089.exe	34

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2032	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1456	CCF_008089.exe
1456	CCF_008089.exe
436	CCF_008089.exe
436	CCF_008089.exe
1244	powershell.exe
1112	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	CCF_008089.exe
Token: SeDebugPrivilege	436	CCF_008089.exe
Token: SeDebugPrivilege	1244	powershell.exe
Token: SeDebugPrivilege	1112	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 1244	1456	CCF_008089.exe	28
PID 1456 wrote to memory of 1244	1456	CCF_008089.exe	28
PID 1456 wrote to memory of 1244	1456	CCF_008089.exe	28
PID 1456 wrote to memory of 1244	1456	CCF_008089.exe	28
PID 1456 wrote to memory of 1112	1456	CCF_008089.exe	30
PID 1456 wrote to memory of 1112	1456	CCF_008089.exe	30
PID 1456 wrote to memory of 1112	1456	CCF_008089.exe	30
PID 1456 wrote to memory of 1112	1456	CCF_008089.exe	30
PID 1456 wrote to memory of 2032	1456	CCF_008089.exe	32
PID 1456 wrote to memory of 2032	1456	CCF_008089.exe	32
PID 1456 wrote to memory of 2032	1456	CCF_008089.exe	32
PID 1456 wrote to memory of 2032	1456	CCF_008089.exe	32
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34
PID 1456 wrote to memory of 436	1456	CCF_008089.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CCF_008089.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3422572840-2899912402-917774768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CCF_008089.exe

C:\Users\Admin\AppData\Local\Temp\CCF_008089.exe
"C:\Users\Admin\AppData\Local\Temp\CCF_008089.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\CCF_008089.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1244
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZAdswUWQxrJstu.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1112
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZAdswUWQxrJstu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B85.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2032
- C:\Users\Admin\AppData\Local\Temp\CCF_008089.exe
  "C:\Users\Admin\AppData\Local\Temp\CCF_008089.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:436

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmp9B85.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp9B85.tmp
Size 1KB
SHA256 a8ce54cf567064d60325e59a8fcae2c1d8dd314720248a68625cc0c3b2b9db5b
MD5 02111ce8e95f6d0d0c6312d282fda1e8
SHA1 6a9230ae499cba69d0c562e217f8c65f3cabcd16
SHA512 c0a790220b1a447bb113946003d240aff822f3d62820cf9c184597104c4f42747f6ce13ff41437aad891acdc26a83d335e390d43a401d6634240a4aaef94989b
MD5 SHA1 SHA512

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d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 c08620e85a7b714350106c70da36e2429726b1a6e06fc2167e1e3d970df08960
MD5 a7c051f1a947302f713f6974f585fb33
SHA1 8b5193007f7f167fa04fbad60d0b64e2a661b37a
SHA512 f699b0f58333b3afed005ab470758e6c9c0b6fbcf56621840e684737bea807b354925437cdeba2cad2ffad3d7db522a8d6c8872802646598230f9efec6704b90
SSDEEP 96:U3JWCDVHM83nqvsqvJCwoiJ3JWCDVHM83nqvsEHyqvJCworcui0fQHdrR7N2XlUP:OJhhrUoidJhhrAHnorcuVWrR7N2vi
MD5 SHA1 SHA512 SSDEEP

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memory/436-65-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-73-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-70-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-69-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-68-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-66-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/436-75-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1112-77-0x00000000024A0000-0x00000000030EA000-memory.dmp

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memory/1112-78-0x000000006ED30000-0x000000006F2DB000-memory.dmp

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memory/1244-79-0x00000000024D2000-0x00000000024D4000-memory.dmp

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memory/1244-76-0x000000006ED30000-0x000000006F2DB000-memory.dmp

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memory/1244-58-0x00000000755B1000-0x00000000755B3000-memory.dmp

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memory/1456-56-0x0000000007E50000-0x0000000007ECE000-memory.dmp

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memory/1456-54-0x00000000011F0000-0x00000000012CC000-memory.dmp

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memory/1456-64-0x0000000004D70000-0x0000000004DAC000-memory.dmp

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memory/1456-55-0x00000000004D0000-0x00000000004DE000-memory.dmp

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