agenttesla | bd557f84277a8c9f4098474f8449c78ca3c5afa108215ae44fb61668b2c0cfba

General

Target

eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe
Size

297KB
MD5

eccf8ac19437cab9813a7c3d4f433714
SHA1

0fa355d8d2be7e78684bac697d71e27114ba96b1
SHA256

bd557f84277a8c9f4098474f8449c78ca3c5afa108215ae44fb61668b2c0cfba
SHA512

1165649f55f7e094803c95fc4eb518c176a9b8dd33c046166331d619ea30a7e50c85585ef3a5a723291caee487796a2f6b81e34cae0c69dc698cf7b688140d81
SSDEEP

6144:nbgMF6Phu8oFvYCUUG1mOvebfIL1h/bDg6EMGT63V9bBh:bgfuD7meTq1hDDZGm3Vbh

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1898788581:AAEbsCzTih-rxVDH11H9U8nZ_h_9VfJgvh4/sendDocument

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/2316-3-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 2316	628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe	85

System Location Discovery: System Language Discovery 1 TTPs 2 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	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2316	MSBuild.exe
2316	MSBuild.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	MSBuild.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2316	628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe	85
PID 628 wrote to memory of 2316	628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe	85
PID 628 wrote to memory of 2316	628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe	85
PID 628 wrote to memory of 2316	628	eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
  "C:\Users\Admin\AppData\Local\Temp\eccf8ac19437cab9813a7c3d4f433714_JaffaCakes118.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2316

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/628-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/628-2-0x0000000002400000-0x0000000002402000-memory.dmp

Filesize
8KB

Download
memory/2316-3-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2316-4-0x00000000745E2000-0x00000000745E3000-memory.dmp

Filesize
4KB

Download
memory/2316-5-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-6-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-7-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-8-0x00000000745E2000-0x00000000745E3000-memory.dmp

Filesize
4KB

Download
memory/2316-9-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-10-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-11-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download
memory/2316-12-0x00000000745E0000-0x0000000074B91000-memory.dmp

Filesize
5.7MB

Download

Analysis

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