agenttesla | 0ca1f0a08b7a21079683beeaf8bfa86df3d396b8d7a0cade52e963b78bd9a7e3

General

Target
Bank Details.exe
Size 1.2MB
Sample200901-995p4l5tl2
SHA256 0ca1f0a08b7a21079683beeaf8bfa86df3d396b8d7a0cade52e963b78bd9a7e3
MD5 6cc3fa5028ea0d1ba0c8f77d6fc0aff8
SHA1 8d806b094319a34473fb196bdf6af7add10dd8ac
SHA512 d3da0729b2c8ffd1257b5df0ef3e86f6055eef96cedbc48f3c9d892b276983916772322d407df6c80821319dfa65ad15c981f3d40e06a71e33331899005171ba
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.anartem.pt
Port
587
Username
[email protected]
Password
amarachukwu13

Signatures

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

AgentTesla Payload 7 IoCs

resource	yara_rule
behavioral2/memory/2440-2-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral2/memory/2440-3-0x0000000000460E4E-mapping.dmp	family_agenttesla
behavioral2/memory/2440-12-0x0000000000460E4E-mapping.dmp	family_agenttesla
behavioral2/memory/2440-13-0x0000000000460E4E-mapping.dmp	family_agenttesla
behavioral2/memory/2440-14-0x0000000000460E4E-mapping.dmp	family_agenttesla
behavioral2/memory/2440-15-0x0000000000460E4E-mapping.dmp	family_agenttesla
behavioral2/memory/2440-16-0x0000000000460E4E-mapping.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Bank Details.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Bank Details.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Bank Details.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Bank Details.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3588 set thread context of 2440	3588	Bank Details.exe	79

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

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
1608	schtasks.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 96acd6fc1c80d601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3588	Bank Details.exe
2812	dw20.exe
2812	dw20.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3412	svchost.exe
Token: SeCreatePagefilePrivilege	3412	svchost.exe
Token: SeDebugPrivilege	3588	Bank Details.exe
Token: SeRestorePrivilege	2812	dw20.exe
Token: SeBackupPrivilege	2812	dw20.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 1608	3588	Bank Details.exe	77
PID 3588 wrote to memory of 1608	3588	Bank Details.exe	77
PID 3588 wrote to memory of 1608	3588	Bank Details.exe	77
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 3588 wrote to memory of 2440	3588	Bank Details.exe	79
PID 2440 wrote to memory of 2812	2440	Bank Details.exe	80
PID 2440 wrote to memory of 2812	2440	Bank Details.exe	80
PID 2440 wrote to memory of 2812	2440	Bank Details.exe	80

C:\Users\Admin\AppData\Local\Temp\Bank Details.exe
"C:\Users\Admin\AppData\Local\Temp\Bank Details.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fxYuYxHDUAzUw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD91B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1608
- C:\Users\Admin\AppData\Local\Temp\Bank Details.exe
  "C:\Users\Admin\AppData\Local\Temp\Bank Details.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 696
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2812

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:3412