agenttesla | 34b1c6c20cd82d093a0e6755ae73f6ed23ff7aa737a2a9e5d30b006a9fd5ad3c

General

Target

Halkbank_Ekstre_20200603_080247_232393.pdf.exe
Size

582KB
MD5

32ebeb323b54e54f34c93ac37fbb7c4a
SHA1

d04a040ab6138f657396bfbe15f4755488d13a51
SHA256

7547000cffcd87e9e090bde11e04477a2ec2f57dfe468c217912e0afa2e530d3
SHA512

c8ed211171aab472547bdce074cc6ad706a17720b7a46f54b0ced7751587d2914493234c26582f53babfbf1f9ad454ec22f1902ade2afa990a3ca43a6c33c65d
SSDEEP

12288:qS+QOamWtnnGCXFYLBmUQyADQfF8FI/71+zE5z1:nP1BtfXOszDQt8F6

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
335410

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/3472-9-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

resource	yara_rule
behavioral2/memory/224-7-0x000000000ADE0000-0x000000000AE38000-memory.dmp	rezer0

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20200603_080247_232393.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20200603_080247_232393.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe
3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe
3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe
Token: SeDebugPrivilege	3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 224 wrote to memory of 3472	224	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	93
PID 3472 wrote to memory of 3940	3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	97
PID 3472 wrote to memory of 3940	3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	97
PID 3472 wrote to memory of 3940	3472	Halkbank_Ekstre_20200603_080247_232393.pdf.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20200603_080247_232393.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200603_080247_232393.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200603_080247_232393.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200603_080247_232393.pdf.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:3472
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:3940

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3452,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4132 /prefetch:8
1⤵
PID:3412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank_Ekstre_20200603_080247_232393.pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/224-5-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/224-17-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/224-1-0x0000000000EB0000-0x0000000000F48000-memory.dmp

Filesize
608KB

Download
memory/224-4-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/224-0-0x0000000074B7E000-0x0000000074B7F000-memory.dmp

Filesize
4KB

Download
memory/224-6-0x0000000008130000-0x0000000008138000-memory.dmp

Filesize
32KB

Download
memory/224-7-0x000000000ADE0000-0x000000000AE38000-memory.dmp

Filesize
352KB

Download
memory/224-8-0x000000000AEE0000-0x000000000AF7C000-memory.dmp

Filesize
624KB

Download
memory/224-3-0x0000000007DD0000-0x0000000007E62000-memory.dmp

Filesize
584KB

Download
memory/224-2-0x0000000008380000-0x0000000008924000-memory.dmp

Filesize
5.6MB

Download
memory/3472-27-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3472-12-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3472-14-0x0000000005850000-0x0000000005868000-memory.dmp

Filesize
96KB

Download
memory/3472-15-0x0000000005F80000-0x0000000005FE6000-memory.dmp

Filesize
408KB

Download
memory/3472-13-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3472-18-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3472-19-0x0000000006B90000-0x0000000006BE0000-memory.dmp

Filesize
320KB

Download
memory/3472-26-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3472-9-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing