agenttesla | 6dd03646685c5f0f835db9af5c3e80e3b425fdea1595f81f62bee4550b2a7635

General

Target

USD_Payment Details.xls
Size

95KB
MD5

fd1be82d683bde7bdf1ae61d2eda6827
SHA1

de3b56b9f7c978cfa7a6e4a2533b9fc7bf0ec909
SHA256

6dd03646685c5f0f835db9af5c3e80e3b425fdea1595f81f62bee4550b2a7635
SHA512

0cc7ad398cb9255bdfa90ad37f2d78a905826ba6b93ad172797ed366976f065d449bc02e10c662740943b8b4ddee365bc6382be6d6a2cabadc0789709ce5c3e7

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.skibokshotell.no/
Port:
21
Username:
[email protected]
Password:
u{psFslG@7Ly

Protocol: ftp
Host:
ftp://ftp.skibokshotell.no/
Port:
21
Username:
[email protected]
Password:
u{psFslG@7Ly

Signatures

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

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1612-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1612-7-0x00000000004470CE-mapping.dmp	family_agenttesla
behavioral1/memory/1612-9-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1612-10-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Drops file in Drivers directory 1 IoCs

Processes:

OMSBITNRE.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts OMSBITNRE.exe
Executes dropped EXE 2 IoCs

Processes:

OMSBITNRE.exeOMSBITNRE.exe

pid process

1780 OMSBITNRE.exe
1612 OMSBITNRE.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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

pid	process
1780	OMSBITNRE.exe
1612	OMSBITNRE.exe

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

Processes:

OMSBITNRE.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	OMSBITNRE.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	OMSBITNRE.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081

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

Processes:

OMSBITNRE.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	OMSBITNRE.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	OMSBITNRE.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

OMSBITNRE.exe

description pid process target process

PID 1780 set thread context of 1612 1780 OMSBITNRE.exe OMSBITNRE.exe
Office loads VBA resources, possible macro or embedded object present
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

672 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

OMSBITNRE.exe

pid process

1612 OMSBITNRE.exe
1612 OMSBITNRE.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

OMSBITNRE.exe

description pid process

Token: SeDebugPrivilege 1612 OMSBITNRE.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXEOMSBITNRE.exe

pid process

672 EXCEL.EXE
672 EXCEL.EXE
672 EXCEL.EXE
1612 OMSBITNRE.exe

description	pid	process	target process
PID 1780 set thread context of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe

pid	process
672	EXCEL.EXE

pid	process
1612	OMSBITNRE.exe
1612	OMSBITNRE.exe

description	pid	process
Token: SeDebugPrivilege	1612	OMSBITNRE.exe

pid	process
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
1612	OMSBITNRE.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

EXCEL.EXEOMSBITNRE.exe

description	pid	process	target process
PID 672 wrote to memory of 1780	672	EXCEL.EXE	OMSBITNRE.exe
PID 672 wrote to memory of 1780	672	EXCEL.EXE	OMSBITNRE.exe
PID 672 wrote to memory of 1780	672	EXCEL.EXE	OMSBITNRE.exe
PID 672 wrote to memory of 1780	672	EXCEL.EXE	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe
PID 1780 wrote to memory of 1612	1780	OMSBITNRE.exe	OMSBITNRE.exe

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\USD_Payment Details.xls"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:672

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe"
2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1780

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe
"{path}"
3⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe
MD5
e3516cf406d891902c553d6a43efdc65

SHA1
435d7a53989670d50578c9aff2b334187222088e

SHA256
702e54b967e1c8aedcdfea2306b429b15e284b9b88439c9636182a36322e179b

SHA512
1454b39a6a9ccea31c5a682baec84d42668a9787e66d4eda2df0a74b5d47a928b814bda29a51fe3374c3f315d07fcaa50df0d926e8c5ee6bd8f521ba2d068d92

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe
MD5
e3516cf406d891902c553d6a43efdc65

SHA1
435d7a53989670d50578c9aff2b334187222088e

SHA256
702e54b967e1c8aedcdfea2306b429b15e284b9b88439c9636182a36322e179b

SHA512
1454b39a6a9ccea31c5a682baec84d42668a9787e66d4eda2df0a74b5d47a928b814bda29a51fe3374c3f315d07fcaa50df0d926e8c5ee6bd8f521ba2d068d92

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\OMSBITNRE.exe
MD5
e3516cf406d891902c553d6a43efdc65

SHA1
435d7a53989670d50578c9aff2b334187222088e

SHA256
702e54b967e1c8aedcdfea2306b429b15e284b9b88439c9636182a36322e179b

SHA512
1454b39a6a9ccea31c5a682baec84d42668a9787e66d4eda2df0a74b5d47a928b814bda29a51fe3374c3f315d07fcaa50df0d926e8c5ee6bd8f521ba2d068d92

Download Submit
memory/1612-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1612-7-0x00000000004470CE-mapping.dmp

Download
memory/1612-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1612-10-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1780-1-0x0000000000000000-mapping.dmp

Download
memory/1780-5-0x0000000000000000-0x0000000000000000-disk.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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