agenttesla | bd12432d658fd852cc811d97ae1b0363200eea090d672dfa266878fd6fbb84b5

General

Target

citat.exe
Size

507KB
MD5

4c0812477679e4c34663933be5c5f9fb
SHA1

3c3df6e2bb55f8870b9eb9da60008ea58972a20e
SHA256

66b15ee82b31364bbb038c7a2f60fac0057d01b0865b2b71a4418293fc9e056d
SHA512

35868df44b9faf661bd916d5210e5229863838d609f2056f1b6da9e148d588dba5516aa296adad2f42f74e9b13d7ece042b26424820b038025106fb7f0822aa4

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
SENEGAL12345

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/360-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/360-64-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/360-66-0x0000000000446D2E-mapping.dmp	family_agenttesla
behavioral1/memory/360-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/360-68-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/360-70-0x0000000000400000-0x000000000044C000-memory.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

Processes:

citat.exe

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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

Processes:

citat.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

citat.exe

description pid process target process

PID 652 set thread context of 360 652 citat.exe RegSvcs.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

Processes:

schtasks.exe

pid process

948 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

citat.exeRegSvcs.exe

pid process

652 citat.exe
360 RegSvcs.exe
360 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

citat.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 652 citat.exe
Token: SeDebugPrivilege 360 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

360 RegSvcs.exe

description	pid	process	target process
PID 652 set thread context of 360	652	citat.exe	RegSvcs.exe

pid	process
948	schtasks.exe

pid	process
652	citat.exe
360	RegSvcs.exe
360	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	652	citat.exe
Token: SeDebugPrivilege	360	RegSvcs.exe

pid	process
360	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

citat.exe

description	pid	process	target process
PID 652 wrote to memory of 948	652	citat.exe	schtasks.exe
PID 652 wrote to memory of 948	652	citat.exe	schtasks.exe
PID 652 wrote to memory of 948	652	citat.exe	schtasks.exe
PID 652 wrote to memory of 948	652	citat.exe	schtasks.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe
PID 652 wrote to memory of 360	652	citat.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\citat.exe
"C:\Users\Admin\AppData\Local\Temp\citat.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:652

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YYRzvn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp200F.tmp"
2⤵
- Creates scheduled task(s)
PID:948

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:360

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp200F.tmp
Filesize
1KB

MD5
6521cea9afa7eef513c6f25f26190dd8

SHA1
3cfdedd4ba106ee3585c89a56f0068ab03fa146c

SHA256
5973924d9b271b23a44cd9cdac97d266de9ccd823cdd9d6f9981631ede6d9616

SHA512
15d58c2d84d7801c36edf3fe9ef192143b836ab197643946092bf9918f03354497501b1e15f4a47d36e36d8b1161ca3daa497102df6bf9f458e630bad2a2be90

Download Submit
memory/360-64-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-60-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-66-0x0000000000446D2E-mapping.dmp

Download
memory/360-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/360-70-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/652-56-0x0000000001E40000-0x0000000001E94000-memory.dmp

Filesize
336KB

Download
memory/652-57-0x00000000765F1000-0x00000000765F3000-memory.dmp

Filesize
8KB

Download
memory/652-55-0x00000000004F0000-0x000000000050C000-memory.dmp

Filesize
112KB

Download
memory/652-54-0x00000000009B0000-0x0000000000A36000-memory.dmp

Filesize
536KB

Download
memory/948-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads