agenttesla | 018506d82dc892d23c3b3bec9f81044d040dd6f3c04839acba081713f1576d14

General

Target

long overdue statement (3).exe
Size

401KB
MD5

f2f2039a030460a562bd6fd7129775af
SHA1

cd6724348219200752f3e06da09556e690e1abef
SHA256

12b8f1b224e66e7fcae47229c008f04c435cbc98dff24c4a4092a80f26b67924
SHA512

e3f6fdb31858ecf6e72b6a5979767472163994f706ca7951a22f0be20f630a01ec10f37f1c336a1520089621029bcfdc8ae9d70e7dbba03fbea3c0cb09476165

Score

10^/10

agenttesla collection keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.saamaygroup.com
Port:
587
Username:
ashimdutta@saamaygroup.com
Password:
pawan100

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/956-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/956-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/956-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/956-64-0x000000000044774E-mapping.dmp	family_agenttesla
behavioral1/memory/956-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/956-68-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1660-57-0x0000000005C00000-0x0000000005C54000-memory.dmp	rezer0

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

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

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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

long overdue statement (3).exe

description pid process target process

PID 1660 set thread context of 956 1660 long overdue statement (3).exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1084 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

956 RegSvcs.exe
956 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 956 RegSvcs.exe

description	pid	process	target process
PID 1660 set thread context of 956	1660	long overdue statement (3).exe	RegSvcs.exe

pid	process
1084	REG.exe

pid	process
956	RegSvcs.exe
956	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	956	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

long overdue statement (3).exeRegSvcs.exe

description	pid	process	target process
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 1660 wrote to memory of 956	1660	long overdue statement (3).exe	RegSvcs.exe
PID 956 wrote to memory of 1084	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1084	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1084	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1084	956	RegSvcs.exe	REG.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\long overdue statement (3).exe
"C:\Users\Admin\AppData\Local\Temp\long overdue statement (3).exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1660

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
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:956

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:1084

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/956-64-0x000000000044774E-mapping.dmp

Download
memory/956-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/956-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1084-70-0x0000000000000000-mapping.dmp

Download
memory/1660-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1660-56-0x0000000000250000-0x0000000000258000-memory.dmp

Filesize
32KB

Download
memory/1660-57-0x0000000005C00000-0x0000000005C54000-memory.dmp

Filesize
336KB

Download
memory/1660-54-0x00000000012B0000-0x000000000131A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads