agenttesla | bbfd3959ef22e9fa18ed11cbc9b8f31ac36e86f0d055d2c57b81ee19f9c54175

General

Target

duk (3).exe
Size

511KB
MD5

04b191c4242a98c5b14ed1de9c61ef8c
SHA1

4c4fafb67933eb18100acdc76128f42dc9a9525f
SHA256

bbfd3959ef22e9fa18ed11cbc9b8f31ac36e86f0d055d2c57b81ee19f9c54175
SHA512

c613ece1002132dfacf60eb41a0d1910e3e3c314db9b53f13b9e9eb34c4db9553538f3fc12f22c3ddf5ca705a53f64517783b292c240c20ec0d002a8e202144b

Score

10^/10

agenttesla nanocore coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hotel71.com.bd
Port:
587
Username:
chat@hotel71.com.bd
Password:
9+^va&phP1v9

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral2/memory/1100-6-0x0000000002350000-0x0000000002353000-memory.dmp	coreentity

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

AgentTesla Payload 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2448-9-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/2448-10-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-22-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-21-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-23-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-25-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-24-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-26-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-33-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-32-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-31-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-30-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-34-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-29-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-28-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral2/memory/2448-27-0x000000000044AC5E-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral2/memory/1100-7-0x000000000A5D0000-0x000000000A621000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
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
Suspicious use of SetThreadContext 1 IoCs

Processes:

duk (3).exe

description pid process target process

PID 1100 set thread context of 2448 1100 duk (3).exe RegSvcs.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3052 2448 WerFault.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1124 REG.exe

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

description	pid	process	target process
PID 1100 set thread context of 2448	1100	duk (3).exe	RegSvcs.exe

pid	pid_target	process	target process
3052	2448	WerFault.exe	RegSvcs.exe

pid	process
1124	REG.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

RegSvcs.exeWerFault.exe

pid	process
2448	RegSvcs.exe
2448	RegSvcs.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe
3052	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

duk (3).exeRegSvcs.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	1100	duk (3).exe
Token: SeDebugPrivilege	2448	RegSvcs.exe
Token: SeRestorePrivilege	3052	WerFault.exe
Token: SeBackupPrivilege	3052	WerFault.exe
Token: SeDebugPrivilege	3052	WerFault.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

duk (3).exe

pid process

1100 duk (3).exe
1100 duk (3).exe

pid	process
1100	duk (3).exe
1100	duk (3).exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

duk (3).exeRegSvcs.exe

description	pid	process	target process
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 1100 wrote to memory of 2448	1100	duk (3).exe	RegSvcs.exe
PID 2448 wrote to memory of 1124	2448	RegSvcs.exe	REG.exe
PID 2448 wrote to memory of 1124	2448	RegSvcs.exe	REG.exe
PID 2448 wrote to memory of 1124	2448	RegSvcs.exe	REG.exe
PID 2448 wrote to memory of 3100	2448	RegSvcs.exe	netsh.exe
PID 2448 wrote to memory of 3100	2448	RegSvcs.exe	netsh.exe
PID 2448 wrote to memory of 3100	2448	RegSvcs.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\duk (3).exe
"C:\Users\Admin\AppData\Local\Temp\duk (3).exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448

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:1124

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 1524
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1100-1-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/1100-3-0x0000000007260000-0x0000000007261000-memory.dmp

Filesize
4KB

Download
memory/1100-4-0x0000000006E00000-0x0000000006E01000-memory.dmp

Filesize
4KB

Download
memory/1100-5-0x0000000006DB0000-0x0000000006DB1000-memory.dmp

Filesize
4KB

Download
memory/1100-6-0x0000000002350000-0x0000000002353000-memory.dmp

Filesize
12KB

Download
memory/1100-7-0x000000000A5D0000-0x000000000A621000-memory.dmp

Filesize
324KB

Download
memory/1100-8-0x000000000A6E0000-0x000000000A6E1000-memory.dmp

Filesize
4KB

Download
memory/1100-0-0x0000000073CB0000-0x000000007439E000-memory.dmp

Filesize
6.9MB

Download
memory/1124-18-0x0000000000000000-mapping.dmp

Download
memory/2448-26-0x000000000044AC5E-mapping.dmp

Download
memory/2448-30-0x000000000044AC5E-mapping.dmp

Download
memory/2448-16-0x0000000004E00000-0x0000000004E01000-memory.dmp

Filesize
4KB

Download
memory/2448-17-0x00000000059D0000-0x00000000059D1000-memory.dmp

Filesize
4KB

Download
memory/2448-10-0x000000000044AC5E-mapping.dmp

Download
memory/2448-27-0x000000000044AC5E-mapping.dmp

Download
memory/2448-28-0x000000000044AC5E-mapping.dmp

Download
memory/2448-22-0x000000000044AC5E-mapping.dmp

Download
memory/2448-21-0x000000000044AC5E-mapping.dmp

Download
memory/2448-23-0x000000000044AC5E-mapping.dmp

Download
memory/2448-25-0x000000000044AC5E-mapping.dmp

Download
memory/2448-24-0x000000000044AC5E-mapping.dmp

Download
memory/2448-9-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2448-33-0x000000000044AC5E-mapping.dmp

Download
memory/2448-32-0x000000000044AC5E-mapping.dmp

Download
memory/2448-31-0x000000000044AC5E-mapping.dmp

Download
memory/2448-11-0x0000000073CB0000-0x000000007439E000-memory.dmp

Filesize
6.9MB

Download
memory/2448-34-0x000000000044AC5E-mapping.dmp

Download
memory/2448-29-0x000000000044AC5E-mapping.dmp

Download
memory/3052-20-0x0000000004550000-0x0000000004551000-memory.dmp

Filesize
4KB

Download
memory/3052-35-0x0000000004D80000-0x0000000004D81000-memory.dmp

Filesize
4KB

Download
memory/3100-19-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads