agenttesla | 655a38b1686aa4f75f6dd4f2b59c8e9e09cde9997b46bafbe4e3dee38d859c99

General

Target

Ferrecsa D701163.pdf.exe
Size

1.2MB
MD5

861b8fa009a52d4a2a0484b8c2673fb3
SHA1

379c013437d1f2956eb40772281754545a6ad124
SHA256

655a38b1686aa4f75f6dd4f2b59c8e9e09cde9997b46bafbe4e3dee38d859c99
SHA512

5d24eb0674278d40e26db482e06a301ccca675a1454593868929fde24def1dcc6431ecee123fa05ec2907c375d2220d8499e68d15be5343e4e2ace529a6776f8
SSDEEP

24576:jiUmSB/o5d1ubcv7HAUJDeRSCJvYDxsHWaNL5ZUPNZjk9WtI5CtbXosz67:j/mU/ohubcv77qRNBSMNLgPNYWi5Ctzc

Score

10^/10

agenttesla credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.corpsa.net
Port:
21
Username:
[email protected]
Password:
HMcJs([wrG~1

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4844-0-0x00000000006B0000-0x000000000093A000-memory.dmp	upx
behavioral2/memory/4844-17-0x00000000006B0000-0x000000000093A000-memory.dmp	upx

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4844-17-0x00000000006B0000-0x000000000093A000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4844 set thread context of 1640	4844	Ferrecsa D701163.pdf.exe	87
PID 1640 set thread context of 3568	1640	RegSvcs.exe	95

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	Ferrecsa D701163.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3568	RegSvcs.exe
3568	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4844	Ferrecsa D701163.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	RegSvcs.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4844	Ferrecsa D701163.pdf.exe
4844	Ferrecsa D701163.pdf.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4844	Ferrecsa D701163.pdf.exe
4844	Ferrecsa D701163.pdf.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 1640	4844	Ferrecsa D701163.pdf.exe	87
PID 4844 wrote to memory of 1640	4844	Ferrecsa D701163.pdf.exe	87
PID 4844 wrote to memory of 1640	4844	Ferrecsa D701163.pdf.exe	87
PID 4844 wrote to memory of 1640	4844	Ferrecsa D701163.pdf.exe	87
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95
PID 1640 wrote to memory of 3568	1640	RegSvcs.exe	95

C:\Users\Admin\AppData\Local\Temp\Ferrecsa D701163.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Ferrecsa D701163.pdf.exe"
1⤵
- 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:4844
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Users\Admin\AppData\Local\Temp\Ferrecsa D701163.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

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\Microsoft\CLR_v4.0_32\UsageLogs\RegSvcs.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\aut9A2D.tmp

Filesize
691KB

MD5
062e4605d09c59d9cafa776f3cb5842f

SHA1
234cb30bf5c6edfcaaa8635c49424b131d3a8a37

SHA256
1e6bdc665e50326b8bd1e5a74d906cd1842cbd04e144b1532b032ef9c87d2105

SHA512
f939cdb277a8af78fecf02d4c1bec259129237487bd7af56991c6ca4843d7646f5121c6dc7449e9ece83076abd1385eddbd6adebb9e1d72c65165c492fa674b3

Download Submit
memory/1640-25-0x000000007395E000-0x000000007395F000-memory.dmp

Filesize
4KB

Download
memory/1640-26-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/1640-33-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/1640-18-0x000000007395E000-0x000000007395F000-memory.dmp

Filesize
4KB

Download
memory/1640-19-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/1640-20-0x0000000005540000-0x00000000055D2000-memory.dmp

Filesize
584KB

Download
memory/1640-21-0x0000000005520000-0x000000000552A000-memory.dmp

Filesize
40KB

Download
memory/1640-22-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/1640-23-0x0000000005840000-0x00000000058DC000-memory.dmp

Filesize
624KB

Download
memory/1640-27-0x0000000005BC0000-0x0000000005BD0000-memory.dmp

Filesize
64KB

Download
memory/1640-15-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1640-28-0x0000000008130000-0x00000000081B2000-memory.dmp

Filesize
520KB

Download
memory/1640-24-0x0000000008080000-0x0000000008098000-memory.dmp

Filesize
96KB

Download
memory/3568-29-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/3568-32-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/3568-34-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/3568-35-0x00000000052E0000-0x0000000005346000-memory.dmp

Filesize
408KB

Download
memory/3568-36-0x0000000006210000-0x0000000006260000-memory.dmp

Filesize
320KB

Download
memory/3568-37-0x0000000073950000-0x0000000074100000-memory.dmp

Filesize
7.7MB

Download
memory/4844-0-0x00000000006B0000-0x000000000093A000-memory.dmp

Filesize
2.5MB

Download
memory/4844-14-0x0000000003EC0000-0x0000000003EC4000-memory.dmp

Filesize
16KB

Download
memory/4844-17-0x00000000006B0000-0x000000000093A000-memory.dmp

Filesize
2.5MB

Download

Analysis

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