agenttesla | d08da428bc6f02839f81ccd9bcfe41bf802e4b6d3a7f42dd682c424f2ca7116c

General

Target

d08da428bc6f02839f81ccd9bcfe41bf802e4b6d3a7f42dd682c424f2ca7116c.xlam
Size

602KB
MD5

f4e07aa9c08dd390d4242d4571170f0c
SHA1

71d0534361571acf8b25c8f133b6c17c4a0750b1
SHA256

d08da428bc6f02839f81ccd9bcfe41bf802e4b6d3a7f42dd682c424f2ca7116c
SHA512

da236f5f6059fb2edc7794fdda8063eb03f03606800902f8e0e0c72ca5d08754d38803c2f366aebb83327cfcbd83e545adea53fa5e932d112e395a2b32db4741
SSDEEP

12288:qug9jk/7Y9A+Xcy6x0r0Y0V3IXiLsQ/3Li8AlSecC5qpAwR6aOQwm:y9S+Myajrpb1/3qS4C6aqm

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.stingatoareincendii.ro
Port:
21
Username:
[email protected]
Password:
3.*RYhlG)lkA

Signatures

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	2384	EQNEDT32.EXE
6	2384	EQNEDT32.EXE
8	2384	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2796	zevhnfhjj.exe

Loads dropped DLL 1 IoCs

pid	Process
2384	EQNEDT32.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
9	ip-api.com

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2796-31-0x0000000000380000-0x0000000000568000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 2800	2796	zevhnfhjj.exe	34

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0009000000016c3d-17.dat	upx
behavioral1/memory/2796-23-0x0000000000380000-0x0000000000568000-memory.dmp	upx
behavioral1/memory/2384-21-0x00000000086D0000-0x00000000088B8000-memory.dmp	upx
behavioral1/memory/2796-31-0x0000000000380000-0x0000000000568000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 4 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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zevhnfhjj.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2384	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2684	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2800	RegSvcs.exe
2800	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2796	zevhnfhjj.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	RegSvcs.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2796	zevhnfhjj.exe
2796	zevhnfhjj.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2796	zevhnfhjj.exe
2796	zevhnfhjj.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2684	EXCEL.EXE
2684	EXCEL.EXE
2684	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2796	2384	EQNEDT32.EXE	33
PID 2384 wrote to memory of 2796	2384	EQNEDT32.EXE	33
PID 2384 wrote to memory of 2796	2384	EQNEDT32.EXE	33
PID 2384 wrote to memory of 2796	2384	EQNEDT32.EXE	33
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34
PID 2796 wrote to memory of 2800	2796	zevhnfhjj.exe	34

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\d08da428bc6f02839f81ccd9bcfe41bf802e4b6d3a7f42dd682c424f2ca7116c.xlam
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2684

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\zevhnfhjj.exe
  C:\Users\Admin\AppData\Local\Temp\zevhnfhjj.exe
  2⤵
  - 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:2796
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Users\Admin\AppData\Local\Temp\zevhnfhjj.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

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

\Users\Admin\AppData\Local\Temp\zevhnfhjj.exe

Filesize
888KB

MD5
444607b1379871c3bd8d4badf55317d6

SHA1
25482b19b5672117625fbf309abb6899cbdd1309

SHA256
70fc327609042f2ee6efe6fdc64e99b7c5e13531c0f10a331da46a84082f9ece

SHA512
906cffb2851a43976caf4894dc7b6838b91f6ce3ab3f1a42e326f489f638b1d2eec325e0164a1a83fcdf2385738cee96b8d73c7e27c78c719cb4d5e2160daf1a

Download Submit
memory/2384-21-0x00000000086D0000-0x00000000088B8000-memory.dmp

Filesize
1.9MB

Download
memory/2684-1-0x0000000072B4D000-0x0000000072B58000-memory.dmp

Filesize
44KB

Download
memory/2684-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2684-18-0x0000000072B4D000-0x0000000072B58000-memory.dmp

Filesize
44KB

Download
memory/2796-23-0x0000000000380000-0x0000000000568000-memory.dmp

Filesize
1.9MB

Download
memory/2796-31-0x0000000000380000-0x0000000000568000-memory.dmp

Filesize
1.9MB

Download
memory/2800-27-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2800-28-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2800-29-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

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