agenttesla | 6a6904fef61581e401e942e8d0528d1d5e356b2f41d4792e61b7fe439db18bec

General

Target

bank TT slip.exe
Size

721KB
MD5

fb34717ca05cea78fac1c7a48e7e5684
SHA1

c137cd16f0fe4021aebbe34a8fc6e262605ca45b
SHA256

e9a4d51808c53409c7e5e76b6a0201804ca6cbe8ee2d8cc473e2b8c56503ba1b
SHA512

bce62bd0d47b3d627e063b93260e27a68a64816527d166f9c6e6022fe56f04258e7daa38d05bb446d9ccf3f2ad8fe1de87dab8d532dd11b6dcf09c0685c4daf0

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.prcpl.com
Port:
587
Username:
[email protected]
Password:
jyotika@2015

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4392-138-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe

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

bank TT slip.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	bank TT slip.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CJzRAE = "C:\\Users\\Admin\\AppData\\Roaming\\CJzRAE\\CJzRAE.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bank TT slip.exe

description pid process target process

PID 2388 set thread context of 4392 2388 bank TT slip.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

5056 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

bank TT slip.exeRegSvcs.exe

pid process

2388 bank TT slip.exe
2388 bank TT slip.exe
2388 bank TT slip.exe
2388 bank TT slip.exe
4392 RegSvcs.exe
4392 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bank TT slip.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 2388 bank TT slip.exe
Token: SeDebugPrivilege 4392 RegSvcs.exe

description	pid	process	target process
PID 2388 set thread context of 4392	2388	bank TT slip.exe	RegSvcs.exe

pid	process
5056	schtasks.exe

pid	process
2388	bank TT slip.exe
2388	bank TT slip.exe
2388	bank TT slip.exe
2388	bank TT slip.exe
4392	RegSvcs.exe
4392	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2388	bank TT slip.exe
Token: SeDebugPrivilege	4392	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

bank TT slip.exe

description	pid	process	target process
PID 2388 wrote to memory of 5056	2388	bank TT slip.exe	schtasks.exe
PID 2388 wrote to memory of 5056	2388	bank TT slip.exe	schtasks.exe
PID 2388 wrote to memory of 5056	2388	bank TT slip.exe	schtasks.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe
PID 2388 wrote to memory of 4392	2388	bank TT slip.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\bank TT slip.exe
"C:\Users\Admin\AppData\Local\Temp\bank TT slip.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2388

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZOfFXmWpxZgJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCAB2.tmp"
2⤵
- Creates scheduled task(s)
PID:5056

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4392

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Bypass User Account Control

1

T1088

Scheduled Task

1

T1053

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCAB2.tmp
Filesize
1KB

MD5
2260e1474c092084cce24dbe5fcaac7b

SHA1
807a74466f40cfed12e575e22e8c2ddaadac47c5

SHA256
95641fbffd1362e19966dd37f5eca85743169e5467e9b4b69fee16783cb01f0a

SHA512
bc2d79264f9bdc28fb99baf88286240cec32dd43ecbf4711b387ad99a98c8962375f041acec8cfbe78687734231d90af208b4448a10d8c1b8895f7a3794eb3ea

Download Submit
memory/2388-130-0x0000000000010000-0x00000000000CA000-memory.dmp

Filesize
744KB

Download
memory/2388-131-0x00000000050C0000-0x0000000005664000-memory.dmp

Filesize
5.6MB

Download
memory/2388-132-0x0000000004A50000-0x0000000004AE2000-memory.dmp

Filesize
584KB

Download
memory/2388-133-0x0000000004AF0000-0x0000000004AFA000-memory.dmp

Filesize
40KB

Download
memory/2388-134-0x0000000007780000-0x000000000781C000-memory.dmp

Filesize
624KB

Download
memory/4392-137-0x0000000000000000-mapping.dmp

Download
memory/4392-138-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4392-139-0x00000000066B0000-0x0000000006716000-memory.dmp

Filesize
408KB

Download
memory/4392-140-0x0000000006E10000-0x0000000006E60000-memory.dmp

Filesize
320KB

Download
memory/5056-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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