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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4072-141-0x0000000000400000-0x000000000044C000-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

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

citat.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation citat.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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 4144 set thread context of 4072 4144 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

888 schtasks.exe
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

citat.exeRegSvcs.exe

pid process

4144 citat.exe
4144 citat.exe
4144 citat.exe
4144 citat.exe
4144 citat.exe
4144 citat.exe
4144 citat.exe
4072 RegSvcs.exe
4072 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

citat.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 4144 citat.exe
Token: SeDebugPrivilege 4072 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

4072 RegSvcs.exe

description	pid	process	target process
PID 4144 set thread context of 4072	4144	citat.exe	RegSvcs.exe

pid	process
888	schtasks.exe

pid	process
4144	citat.exe
4144	citat.exe
4144	citat.exe
4144	citat.exe
4144	citat.exe
4144	citat.exe
4144	citat.exe
4072	RegSvcs.exe
4072	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4144	citat.exe
Token: SeDebugPrivilege	4072	RegSvcs.exe

pid	process
4072	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

citat.exe

description	pid	process	target process
PID 4144 wrote to memory of 888	4144	citat.exe	schtasks.exe
PID 4144 wrote to memory of 888	4144	citat.exe	schtasks.exe
PID 4144 wrote to memory of 888	4144	citat.exe	schtasks.exe
PID 4144 wrote to memory of 2896	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 2896	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 2896	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 3076	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 3076	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 3076	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 2660	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 2660	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 2660	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe
PID 4144 wrote to memory of 4072	4144	citat.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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-1-5-21-1809750270-3141839489-3074374771-1000\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
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4144

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YYRzvn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp27BC.tmp"
2⤵
- Creates scheduled task(s)
PID:888

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:2896

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:3076

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:2660

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:4072

Network

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

5

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

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\tmp27BC.tmp
Filesize
1KB

MD5
6a7a2a16412dfdedd98fbeb259884699

SHA1
1040a6801e9cfc5f623ce9771ebfef9300fbb15a

SHA256
b716fd4da3059b61b1c3087e1f89dc7e43ef4d08fccffbf828c3adf8919d5ddd

SHA512
eeb230bae221ea3e2ab2bae5adf84f1e865c24da465e62b579bc01aba585f65d8e6de1d9859a3da9f2e2fc4227a006b196f4e79500bf295719ff7376cfa2baac

Download Submit
memory/888-135-0x0000000000000000-mapping.dmp

Download
memory/2660-139-0x0000000000000000-mapping.dmp

Download
memory/2896-137-0x0000000000000000-mapping.dmp

Download
memory/3076-138-0x0000000000000000-mapping.dmp

Download
memory/4072-140-0x0000000000000000-mapping.dmp

Download
memory/4072-141-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4072-142-0x00000000063E0000-0x0000000006430000-memory.dmp

Filesize
320KB

Download
memory/4072-143-0x0000000006470000-0x000000000647A000-memory.dmp

Filesize
40KB

Download
memory/4144-133-0x00000000066A0000-0x000000000673C000-memory.dmp

Filesize
624KB

Download
memory/4144-134-0x0000000006740000-0x00000000067A6000-memory.dmp

Filesize
408KB

Download
memory/4144-132-0x0000000005870000-0x0000000005902000-memory.dmp

Filesize
584KB

Download
memory/4144-131-0x0000000005D20000-0x00000000062C4000-memory.dmp

Filesize
5.6MB

Download
memory/4144-130-0x0000000000E60000-0x0000000000EE6000-memory.dmp

Filesize
536KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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