agenttesla | bd5e8953da5dd6dff83154edb1c7229ca6c6f97be74ca1a0f6d25f876b424c13

Analysis

max time kernel
39s
max time network
102s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 19:49

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General

Target
PURCHASE ORDER KALI-1374W.exe
Size 509KB
Sample201109-25m788ygex
SHA256 bd5e8953da5dd6dff83154edb1c7229ca6c6f97be74ca1a0f6d25f876b424c13
MD5 c740fe0ef6070b901851c00ea07b4e1a
SHA1 de26df6f5c4475bbcc1311b48b35ca4c213bccc8
SHA512 3a91dcaa9b0d316f66cf6e4dbb1d861d6003848c4d72a4bb49decb0e6c932e39a5e8fd0d7c9060ee28d17628d80da0e4498aa16912c3ab2dd9eb14d5bd3791dc
MD5 SHA1 SHA512

Score

10^/10

agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.pptoursperu.com
Port
587
Username
[email protected]
Password
mailppt2019-

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

resource	yara_rule
behavioral2/memory/4800-6-0x0000000006DB0000-0x0000000006DB3000-memory.dmp	coreentity

AgentTesla Payload 17 IoCs

resource	yara_rule
behavioral2/memory/644-9-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/644-10-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-22-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-21-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-23-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-24-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-25-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-26-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-27-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-28-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-29-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-30-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-31-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-32-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-33-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-35-0x000000000044ABAE-mapping.dmp	family_agenttesla
behavioral2/memory/644-34-0x000000000044ABAE-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

resource	yara_rule
behavioral2/memory/4800-7-0x0000000008AB0000-0x0000000008B01000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 644	4800	PURCHASE ORDER KALI-1374W.exe	75

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2336	644	WerFault.exe	75

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1204	REG.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
644	RegSvcs.exe
644	RegSvcs.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	644	RegSvcs.exe
Token: SeRestorePrivilege	2336	WerFault.exe
Token: SeBackupPrivilege	2336	WerFault.exe
Token: SeDebugPrivilege	2336	WerFault.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 4800 wrote to memory of 644	4800	PURCHASE ORDER KALI-1374W.exe	75
PID 644 wrote to memory of 1204	644	RegSvcs.exe	80
PID 644 wrote to memory of 1204	644	RegSvcs.exe	80
PID 644 wrote to memory of 1204	644	RegSvcs.exe	80
PID 644 wrote to memory of 1680	644	RegSvcs.exe	82
PID 644 wrote to memory of 1680	644	RegSvcs.exe	82
PID 644 wrote to memory of 1680	644	RegSvcs.exe	82

C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER KALI-1374W.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER KALI-1374W.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:644
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
    3⤵
    - Modifies registry key
    PID:1204
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:1680
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 644 -s 1540
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/644-11-0x00000000739D0000-0x00000000740BE000-memory.dmp

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memory/644-16-0x00000000055E0000-0x00000000055E1000-memory.dmp

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memory/644-17-0x0000000006290000-0x0000000006291000-memory.dmp

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memory/644-9-0x0000000000400000-0x0000000000450000-memory.dmp

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memory/2336-20-0x00000000046B0000-0x00000000046B1000-memory.dmp

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memory/2336-37-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

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memory/4800-1-0x00000000008D0000-0x00000000008D1000-memory.dmp

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memory/4800-0-0x00000000739D0000-0x00000000740BE000-memory.dmp

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memory/4800-8-0x0000000008BD0000-0x0000000008BD1000-memory.dmp

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memory/4800-7-0x0000000008AB0000-0x0000000008B01000-memory.dmp

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memory/4800-6-0x0000000006DB0000-0x0000000006DB3000-memory.dmp

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memory/4800-5-0x00000000051A0000-0x00000000051A1000-memory.dmp

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memory/4800-4-0x0000000005240000-0x0000000005241000-memory.dmp

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memory/4800-3-0x00000000056A0000-0x00000000056A1000-memory.dmp

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