agenttesla | 2d5d72d557920e6beef5c35e3cdd3ddd1339b2c4306e4b79e540058afede2063

Analysis

max time kernel
122s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/12/2022, 19:48

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General

Target
PO-23456543_pdf.exe
Size 358KB
Sample221207-yh4e4aah7y
SHA256 2d5d72d557920e6beef5c35e3cdd3ddd1339b2c4306e4b79e540058afede2063
MD5 7db0bc0c978bda0048ac2944b9b86245
SHA1 66e87764ff09ebba04681cbc2c61a43cbfa595b5
SHA512 a52b5044c908af4c404a5c4f3cf5764aac02f8af08bf7985f209a892a7e7e0e110e64201eadb8fb32b1594cb68cd88071911cb44cf2ae44ffa1b6bfea6fc8efb
SSDEEP 6144:LBnb2BEjQdYiIlpaaKRcMoBO5t9Dm/LhGTVwuIWqJllrmuDW5P/G2rb:FLbpxKuM5PqhGTZsJllmua5XG2rb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

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
3608	flogjpnc.exe
4576	flogjpnc.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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	flogjpnc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	flogjpnc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	flogjpnc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Roaming\\Skype\\Skype.exe"	flogjpnc.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	api.ipify.org
15	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 4576	3608	flogjpnc.exe	81

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
4576	flogjpnc.exe
4576	flogjpnc.exe
4576	flogjpnc.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3608	flogjpnc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	flogjpnc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4576	flogjpnc.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 3608	1064	PO-23456543_pdf.exe	79
PID 1064 wrote to memory of 3608	1064	PO-23456543_pdf.exe	79
PID 1064 wrote to memory of 3608	1064	PO-23456543_pdf.exe	79
PID 3608 wrote to memory of 4576	3608	flogjpnc.exe	81
PID 3608 wrote to memory of 4576	3608	flogjpnc.exe	81
PID 3608 wrote to memory of 4576	3608	flogjpnc.exe	81
PID 3608 wrote to memory of 4576	3608	flogjpnc.exe	81

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	flogjpnc.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	flogjpnc.exe

C:\Users\Admin\AppData\Local\Temp\PO-23456543_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO-23456543_pdf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe
  "C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe" C:\Users\Admin\AppData\Local\Temp\jezmemc.dh
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3608
- - C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe
    "C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - outlook_office_path
    - outlook_win_path
    PID:4576

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

Replay Monitor

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Downloads

flogjpnc.exe

Path C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe
Size 267KB
SHA256 85a2cd0739a8386f33c0e76360908f5c32111991e705a68a914551eaf1b4eb59
MD5 6376674d9cb734641768158e12de22ac
SHA1 4c53bc87384e851f20d69f966dd78473831acb5f
SHA512 42f2b0625e33a849588c656c21e04e22a07a04e85509aa389b711f60f8e90a8feb6759b046efd2842386765899c3e20561d10aea024294e5e0522676f1b308a0
SSDEEP 6144:/nO10Q734PX6juZR48pcIr9VxB7ruq04IsXOJduODIzIXhp:/S5734PX6juZR4McIr9h7rcduODbp
MD5 SHA1 SHA512 SSDEEP

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flogjpnc.exe

Path C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe
Size 267KB
SHA256 85a2cd0739a8386f33c0e76360908f5c32111991e705a68a914551eaf1b4eb59
MD5 6376674d9cb734641768158e12de22ac
SHA1 4c53bc87384e851f20d69f966dd78473831acb5f
SHA512 42f2b0625e33a849588c656c21e04e22a07a04e85509aa389b711f60f8e90a8feb6759b046efd2842386765899c3e20561d10aea024294e5e0522676f1b308a0
SSDEEP 6144:/nO10Q734PX6juZR48pcIr9VxB7ruq04IsXOJduODIzIXhp:/S5734PX6juZR4McIr9h7rcduODbp
MD5 SHA1 SHA512 SSDEEP

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flogjpnc.exe

Path C:\Users\Admin\AppData\Local\Temp\flogjpnc.exe
Size 267KB
SHA256 85a2cd0739a8386f33c0e76360908f5c32111991e705a68a914551eaf1b4eb59
MD5 6376674d9cb734641768158e12de22ac
SHA1 4c53bc87384e851f20d69f966dd78473831acb5f
SHA512 42f2b0625e33a849588c656c21e04e22a07a04e85509aa389b711f60f8e90a8feb6759b046efd2842386765899c3e20561d10aea024294e5e0522676f1b308a0
SSDEEP 6144:/nO10Q734PX6juZR48pcIr9VxB7ruq04IsXOJduODIzIXhp:/S5734PX6juZR4McIr9h7rcduODbp
MD5 SHA1 SHA512 SSDEEP

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jezmemc.dh

Path C:\Users\Admin\AppData\Local\Temp\jezmemc.dh
Size 5KB
SHA256 a4efc05c8ebc47650c3be4d99f748217ec5ecc8039323c2b7634bbdf69bf2157
MD5 3db488222c4269cd86ce00231240a46d
SHA1 2c75455dd19e6773adc23d8f341a268a33dfa7f5
SHA512 5078bba8f217fd18bc86b8451b96762e463881d738219cf5cef67584fefb71722230d554b09ab4c76cdfc5376d2c34257b457c060b038dec3d0438cb4ed06e6a
SSDEEP 96:NFcQbfYkXdkEUFBsyoWWGIS2vnve5DW33sQ2WzAX2I7H5H5CkiUF+Hx8PkqQjdpC:7pbQkXd2PhoWWGIS2/vKDW33sQ2WzAXP
MD5 SHA1 SHA512 SSDEEP

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lyftczbkcc.tx

Path C:\Users\Admin\AppData\Local\Temp\lyftczbkcc.tx
Size 241KB
SHA256 b4f1a9ed091fc4731f07784e655219e64a654e772876a2625796150da1cf9faf
MD5 5378624f251a39f83153afa9b648260e
SHA1 28f23387839063f3b870698f74671c817db79f65
SHA512 c6beded1813692862409a3d156bdd50865a26367ac439b362e081a3eb0419f22bdd3e2e00da209d0257cc22f85feca076e3ec80658d41bbc0f51ec64f644b5c9
SSDEEP 6144:ylVDgJh42Ewpo+d3xWmX2YDGilbsxR0zUV+tsE0YD:WVD/z9+HGYiR4tswD
MD5 SHA1 SHA512 SSDEEP

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memory/4576-139-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/4576-140-0x00000000054B0000-0x0000000005A54000-memory.dmp

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memory/4576-141-0x0000000005010000-0x00000000050AC000-memory.dmp

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memory/4576-142-0x0000000005F40000-0x0000000005FA6000-memory.dmp

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memory/4576-143-0x0000000006BF0000-0x0000000006C82000-memory.dmp

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memory/4576-144-0x0000000006A70000-0x0000000006A7A000-memory.dmp

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memory/4576-145-0x0000000006EB0000-0x0000000006F00000-memory.dmp

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