agenttesla | 3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848

General

Target

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe
Size

35KB
MD5

acd36262e3a6dc5caef96035302ea35f
SHA1

9b8001875245b5754f847dfab1f82e13a91e2c77
SHA256

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848
SHA512

f6cbf23e989abe600a3e457e320daf9e751657e1e1724fff6b26a4c22c77d722b31866d51cad97ce964406bd724b45cd2ce970abd27058882ac0db2a097e5fc5
SSDEEP

384:XZirz04kYcm5oRVPUn30CDG1iZMJSalHXeqZhsWIgDWsjxZUtO4f54A:Mi+5uVPUn30gGEZQH5SAXJ4f54A

Score

10^/10

agenttesla discovery keylogger persistence spyware stealer trojan upx

Malware Config

Signatures

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

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:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

Executes dropped EXE 1 IoCs

Processes:

system.exe

pid	Process
2364	system.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MyApp = "C:\\WINDOWS\\system.exe"	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3792-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b5c-7.dat	upx
behavioral2/memory/3792-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2364-17-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

Processes:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

description	ioc	Process
File opened for modification	C:\WINDOWS\system.exe	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exesystem.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exesystem.exe

pid	Process
3792	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe
2364	system.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe

description	pid	Process	procid_target
PID 3792 wrote to memory of 2364	3792	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe	84
PID 3792 wrote to memory of 2364	3792	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe	84
PID 3792 wrote to memory of 2364	3792	3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe	84

C:\Users\Admin\AppData\Local\Temp\3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe
"C:\Users\Admin\AppData\Local\Temp\3b8b49f9418762835e73c0584c5550a1060d44c8a705629d06104b83fab9b848.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3792
- C:\WINDOWS\system.exe
  "C:\WINDOWS\system.exe" 0
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\system.exe

Filesize
35KB

MD5
44b9fbf13ad0bfbbfe7bea7178babe08

SHA1
0ee3316015c66d0362315991f36678602e727cd9

SHA256
da81f307b6e03bac882c0314796824f87fa6931402df938652a2899a99149c13

SHA512
db028dfbd4edeea2233155a8f02cae35bb42350c3be497053d51dc40350556f363c06aac4b8795d6b6bafc2d2717d510fc1a3419ce93fca7d84a0b8dd967bf36

Download Submit
memory/2364-17-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads