agenttesla | ad1a702f17301fff222e1cf0b679e6d3d739954ce98ac0b90a34b8fc83869ca5

Analysis

max time kernel
4294178s
max time network
136s
platform
windows7_x64
resource
win7-20220311-en
submitted
27/03/2022, 19:54

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General

Target
PO.exe
Size 538KB
Sample220327-ymjaqagfdp
SHA256 ad1a702f17301fff222e1cf0b679e6d3d739954ce98ac0b90a34b8fc83869ca5
MD5 064515bc5e636cdb899f4246cd682d63
SHA1 57d03a00938cb02979ec9dcd957fbce5d1301a0f
SHA512 07dc7f2a7dacf85f154c05ac5b2bc974be8c494440325179fead41b9ec972d58a38a135c741a6a5c1fd08d4d58b6793ec50872fe97f8f5ee22f0e447c5878a3e
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.contrivekota.in
Port
587
Username
[email protected]
Password
Contrive123$

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.contrivekota.in
Port
587
Username
[email protected]
Password
Contrive123$
Email to
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata
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-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1668 set thread context of 1072	1668	PO.exe	31

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
1248	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1668	PO.exe
1072	PO.exe
1072	PO.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	PO.exe
Token: SeDebugPrivilege	1072	PO.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1248	1668	PO.exe	29
PID 1668 wrote to memory of 1248	1668	PO.exe	29
PID 1668 wrote to memory of 1248	1668	PO.exe	29
PID 1668 wrote to memory of 1248	1668	PO.exe	29
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31
PID 1668 wrote to memory of 1072	1668	PO.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO.exe

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\URlbJmxzoTy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D44.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1248
- C:\Users\Admin\AppData\Local\Temp\PO.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1072

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

Replay Monitor

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Downloads

tmp6D44.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp6D44.tmp
Size 1KB
SHA256 6cd1338f22d62593030db2fae32c6659a1016240e0c7887ac5128e98cc6f1de5
MD5 e7e6b3174594ce529db346ac6e1743a1
SHA1 49c00fedeac119ec355fee6583dbf3576a0aadd1
SHA512 4bbb002ba11de77d1e896f19be22b6a7f7e3e31083241e307d4ebab602765399daf14dccf55c21ad186d42a6f2255d91195b2fab539f5a765c3d4b3d348c0e61
MD5 SHA1 SHA512

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memory/1072-64-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-60-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-61-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-63-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-65-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-68-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1072-70-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1668-56-0x00000000057B0000-0x0000000005832000-memory.dmp

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memory/1668-57-0x0000000000580000-0x00000000005BA000-memory.dmp

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memory/1668-55-0x00000000003E0000-0x00000000003EA000-memory.dmp

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memory/1668-54-0x0000000000910000-0x000000000099C000-memory.dmp

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