agenttesla | 01b10e69f2bf67fdd929c4cb584dd248a71ad447eb460787f9e2ba34129ac4c3

Resubmissions

27/12/2022, 14:34

221227-rxqn8afa54 10

27/12/2022, 14:34

221227-rxfh9afa52 10

25/12/2022, 11:46

221225-nxcwksee8w 10

Analysis

max time kernel
36s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/12/2022, 14:34

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General

Target

Halkbank_Ekstre_20221222_114527_468568.exe
Size

497KB
MD5

447d145276eef872ff7ff17aece82184
SHA1

770464513653a17210806339a7bd5f51a761f355
SHA256

a4e9eafd0bfcb5db60683b2c37e4a113087a656408b96e2795f94af8aecc20b2
SHA512

cfeee165c61a2a62f13611d7cad57c8bdc9ebe441718953394cf3e200398a5ebb71ffaf7cc427981105f65c3e6fe23d021d32713ce70a76c80e9296fb3572fbf
SSDEEP

6144:ckwKLoJOtJrEx6csI6PVmWVc9fXEna+sSJSYRf7P1cZGllQYbT:7LosV0/3WVc98a+bJLf7PeZG7/

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5932499274:AAFVgY_mSAbCu0fXfBWMuUmyk56JtTf6--Q/

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1768	bulgqhwm.exe
904	bulgqhwm.exe

Loads dropped DLL 3 IoCs

pid	Process
1148	Halkbank_Ekstre_20221222_114527_468568.exe
1148	Halkbank_Ekstre_20221222_114527_468568.exe
1768	bulgqhwm.exe

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bulgqhwm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bulgqhwm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bulgqhwm.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\qcdeuwwekoehj = "C:\\Users\\Admin\\AppData\\Roaming\\strr\\uyanejxgv.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\bulgqhwm.exe\" C:\\Users\\Admin\\AppData\\Local\\Te"	bulgqhwm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\GsHLJkZ = "C:\\Users\\Admin\\AppData\\Roaming\\GsHLJkZ\\GsHLJkZ.exe"	bulgqhwm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1768 set thread context of 904	1768	bulgqhwm.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
904	bulgqhwm.exe
904	bulgqhwm.exe
904	bulgqhwm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1768	bulgqhwm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	bulgqhwm.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 1768	1148	Halkbank_Ekstre_20221222_114527_468568.exe	28
PID 1148 wrote to memory of 1768	1148	Halkbank_Ekstre_20221222_114527_468568.exe	28
PID 1148 wrote to memory of 1768	1148	Halkbank_Ekstre_20221222_114527_468568.exe	28
PID 1148 wrote to memory of 1768	1148	Halkbank_Ekstre_20221222_114527_468568.exe	28
PID 1768 wrote to memory of 904	1768	bulgqhwm.exe	29
PID 1768 wrote to memory of 904	1768	bulgqhwm.exe	29
PID 1768 wrote to memory of 904	1768	bulgqhwm.exe	29
PID 1768 wrote to memory of 904	1768	bulgqhwm.exe	29
PID 1768 wrote to memory of 904	1768	bulgqhwm.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bulgqhwm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bulgqhwm.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221222_114527_468568.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221222_114527_468568.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe
  "C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe" C:\Users\Admin\AppData\Local\Temp\snbijh.j
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1768
- - C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe
    "C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\snbijh.j

Filesize
7KB

MD5
4ca7058a1cb0f1a0bd6aab41ec0dc9f6

SHA1
4fa464e69cf5cc8fc0ffef5ba9d8e45e476b60c5

SHA256
cdf3aa29316dc7ced98954ea61ca9414842b4d0fb7b7860fbd3f546142222c41

SHA512
9ab5437f072b564844be4354a0d5575532a9fb99af5971f2cbd9b420152ba969345a3dcac8f66ee1088e304c379586a9a7f43d71e91f8d4252d0fbdb8769aa48

Download Submit
C:\Users\Admin\AppData\Local\Temp\soofexghomd.i

Filesize
239KB

MD5
d1ed56c72fb93c4334099d3cd6118782

SHA1
f042aad8470cb2883f3bd4e5edfb8a29f84b2a18

SHA256
33f527a2157556410261da0eda583a090df6e152b9dfb612d2a9abe0d0ef0c38

SHA512
403595f905049674681f7c6f92a83517288a23fa14d3760af2c797998e24c23c275d90871c19624c4563dcbd8e1a445c42a5fd6bd56ebb114e74a644eb8de212

Download Submit
\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
\Users\Admin\AppData\Local\Temp\bulgqhwm.exe

Filesize
104KB

MD5
f88682efc9a0c67e9d473ac16382a464

SHA1
fa590240915943be5549e4a7d367c6e7feae0950

SHA256
8a1605166fe27bc789442fac3ccd1520c6f7ec4e66249ff3ed38e9d836ba29bb

SHA512
f8cdce3bbd7fcfa973e3463cf2cf70b9b4ff529739231c768331bcba4da926ca79d06b206bda964031e334f6dba96eb3d1e03215a0499f0e8be7dd602a5566fd

Download Submit
memory/904-67-0x00000000001E0000-0x000000000020E000-memory.dmp

Filesize
184KB

Download
memory/904-68-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1148-54-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

Download