agenttesla | eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8

General

Target

eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
Size

863KB
MD5

0bb260c0fa360e59553b86a7d94bd09a
SHA1

ddfdb07448646aefaeeb749b517740d5d06484c2
SHA256

eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8
SHA512

604e774697a17f16b2c15a06a8c752080554c4f11812d5eb56ae3d3e19887592c4c442f706201f4ca951e8a0640007386ab70a47c0e959b4f6b3721ca823dc56
SSDEEP

24576:0q5TfcdHj4fmb1MczV8fogZWI21u1ohRZM3HAw:0UTsam/b+Wc+nM3

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.antoniomayol.com:21
Port:
21
Username:
[email protected]
Password:
cMhKDQUk1{;%

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Melba.vbs	Melba.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	Melba.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3160-10-0x00000000009E0000-0x0000000000BC1000-memory.dmp	autoit_exe
behavioral2/memory/2044-14-0x0000000001880000-0x0000000001C80000-memory.dmp	autoit_exe
behavioral2/memory/2044-18-0x0000000000C80000-0x0000000000E61000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2044 set thread context of 3300	2044	Melba.exe	85

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3160-0-0x00000000009E0000-0x0000000000BC1000-memory.dmp	upx
behavioral2/files/0x0007000000023ce2-6.dat	upx
behavioral2/memory/2044-7-0x0000000000C80000-0x0000000000E61000-memory.dmp	upx
behavioral2/memory/3160-10-0x00000000009E0000-0x0000000000BC1000-memory.dmp	upx
behavioral2/memory/2044-18-0x0000000000C80000-0x0000000000E61000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Melba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3300	RegSvcs.exe
3300	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2044	Melba.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3300	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
2044	Melba.exe
2044	Melba.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
2044	Melba.exe
2044	Melba.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3160 wrote to memory of 2044	3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe	84
PID 3160 wrote to memory of 2044	3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe	84
PID 3160 wrote to memory of 2044	3160	eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe	84
PID 2044 wrote to memory of 3300	2044	Melba.exe	85
PID 2044 wrote to memory of 3300	2044	Melba.exe	85
PID 2044 wrote to memory of 3300	2044	Melba.exe	85
PID 2044 wrote to memory of 3300	2044	Melba.exe	85

C:\Users\Admin\AppData\Local\Temp\eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe
"C:\Users\Admin\AppData\Local\Temp\eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3160
- C:\Users\Admin\AppData\Local\flexuosely\Melba.exe
  "C:\Users\Admin\AppData\Local\Temp\eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\flexuosely\Melba.exe

Filesize
863KB

MD5
0bb260c0fa360e59553b86a7d94bd09a

SHA1
ddfdb07448646aefaeeb749b517740d5d06484c2

SHA256
eacf712d6ee65e4002090b5fd2629e97da8bf0b90de3cafb3a7a590cf84895a8

SHA512
604e774697a17f16b2c15a06a8c752080554c4f11812d5eb56ae3d3e19887592c4c442f706201f4ca951e8a0640007386ab70a47c0e959b4f6b3721ca823dc56

Download Submit
memory/2044-18-0x0000000000C80000-0x0000000000E61000-memory.dmp

Filesize
1.9MB

Download
memory/2044-7-0x0000000000C80000-0x0000000000E61000-memory.dmp

Filesize
1.9MB

Download
memory/2044-14-0x0000000001880000-0x0000000001C80000-memory.dmp

Filesize
4.0MB

Download
memory/3160-10-0x00000000009E0000-0x0000000000BC1000-memory.dmp

Filesize
1.9MB

Download
memory/3160-0-0x00000000009E0000-0x0000000000BC1000-memory.dmp

Filesize
1.9MB

Download
memory/3160-3-0x00000000011C0000-0x00000000015C0000-memory.dmp

Filesize
4.0MB

Download
memory/3300-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3300-19-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/3300-20-0x0000000005AA0000-0x0000000006044000-memory.dmp

Filesize
5.6MB

Download
memory/3300-21-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/3300-22-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/3300-23-0x0000000006760000-0x00000000067B0000-memory.dmp

Filesize
320KB

Download
memory/3300-24-0x0000000006850000-0x00000000068E2000-memory.dmp

Filesize
584KB

Download
memory/3300-25-0x00000000067E0000-0x00000000067EA000-memory.dmp

Filesize
40KB

Download
memory/3300-26-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/3300-27-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download

Analysis

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