agenttesla | 1ea31d04175fb842e43adb57eadd01486fbad17841f83d5eff065b67baeb4d69

General

Target

Overdue_account letter.exe
Size

958KB
MD5

40c43a758689271d72709958de73a4cc
SHA1

9fb2af9270987df6a8e974eb745f9a01022c3453
SHA256

1ea31d04175fb842e43adb57eadd01486fbad17841f83d5eff065b67baeb4d69
SHA512

a47e491d4eda64ddedf8d533aea1097fe43b85927074598ee74fb59faa48968e44d7c2f58057375850710389da2a0bcac9eab6a248172a5dcdcc99b7c87d5bf4
SSDEEP

24576:NoU376CMskFgqIyXXkH5MF1FI86jiT17MTsM3ya2veHe:NpPkVXX65cr6jiT1ha2veHe

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5495243543:AAG3XPeGW7yqfXF6_EXjGSfO9SWHJTpqVsU/

Signatures

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\LdtJsTw = "C:\\Users\\Admin\\AppData\\Roaming\\LdtJsTw\\LdtJsTw.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Overdue_account letter.exe

description pid process target process

PID 1140 set thread context of 1760 1140 Overdue_account letter.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

1624 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Overdue_account letter.exeRegSvcs.exe

pid process

1140 Overdue_account letter.exe
1760 RegSvcs.exe
1760 RegSvcs.exe
1760 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Overdue_account letter.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1140 Overdue_account letter.exe
Token: SeDebugPrivilege 1760 RegSvcs.exe

description	pid	process	target process
PID 1140 set thread context of 1760	1140	Overdue_account letter.exe	RegSvcs.exe

pid	process
1624	schtasks.exe

pid	process
1140	Overdue_account letter.exe
1760	RegSvcs.exe
1760	RegSvcs.exe
1760	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1140	Overdue_account letter.exe
Token: SeDebugPrivilege	1760	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Overdue_account letter.exe

description	pid	process	target process
PID 1140 wrote to memory of 1624	1140	Overdue_account letter.exe	schtasks.exe
PID 1140 wrote to memory of 1624	1140	Overdue_account letter.exe	schtasks.exe
PID 1140 wrote to memory of 1624	1140	Overdue_account letter.exe	schtasks.exe
PID 1140 wrote to memory of 1624	1140	Overdue_account letter.exe	schtasks.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe
PID 1140 wrote to memory of 1760	1140	Overdue_account letter.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Overdue_account letter.exe
"C:\Users\Admin\AppData\Local\Temp\Overdue_account letter.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1140

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BymwwwrbD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB971.tmp"
2⤵
- Creates scheduled task(s)
PID:1624

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1760

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

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB971.tmp
Filesize
1KB

MD5
7c4a486f26a40de95f45468f69d68fb4

SHA1
b5ef0446676a0a66ec2640587dee9a9a351c312e

SHA256
03ddeefec8dfde81c80d69452572643894143092d098daf1ba0f379a49b80cc1

SHA512
dc934b395a4bfaba62ce62597b9182b1e3fa1d8099141b7e86b9c7aa49d0f446970fa27e5063e7deed634efa58f89b120c2deee94f53de2e96b33a53f151450d

Download Submit
memory/1140-57-0x0000000005390000-0x0000000005456000-memory.dmp

Filesize
792KB

Download
memory/1140-56-0x0000000000220000-0x0000000000232000-memory.dmp

Filesize
72KB

Download
memory/1140-54-0x0000000000240000-0x0000000000336000-memory.dmp

Filesize
984KB

Download
memory/1140-58-0x0000000005460000-0x00000000054E0000-memory.dmp

Filesize
512KB

Download
memory/1140-55-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1624-59-0x0000000000000000-mapping.dmp

Download
memory/1760-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-66-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-71-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1760-67-0x0000000000437C1E-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads