agenttesla | dff01b9f8946ed3792fe4e32ae3f95834c892f16ca219dc99d78fd15064f82a2

Analysis

max time kernel
137s
max time network
138s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 19:45

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General

Target
qt8hpBzVEeH1O8B.exe
Size 477KB
Sample201109-ftt84mc43j
SHA256 dff01b9f8946ed3792fe4e32ae3f95834c892f16ca219dc99d78fd15064f82a2
MD5 f8c833483ed462c778e1ca98cc9b4e48
SHA1 881d60f55cd7dcba349080e50dcc3249a2acfadf
SHA512 03f1635e7121c4b3f6d1fa4386cee1d15e9b1a3c51c93dff876bb7429d0fc4d6437bd1fcfc97b39a406900203f0664109d673f46b1b18741ea4d62a25697467a
MD5 SHA1 SHA512

Score

10^/10

agenttesla nanocore coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.cpworldindia.com
Port
587
Username
[email protected]
Password
bopo@2014

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/1192-6-0x0000000004D80000-0x0000000004D83000-memory.dmp	coreentity

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

AgentTesla Payload 14 IoCs

resource	yara_rule
behavioral2/memory/192-9-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/192-10-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-21-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-22-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-23-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-24-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-27-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-30-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-29-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-28-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-26-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-25-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-31-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral2/memory/192-32-0x000000000044CEEE-mapping.dmp	family_agenttesla

rezer0 1 IoCs

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

rezer0

resource	yara_rule
behavioral2/memory/1192-7-0x0000000005040000-0x0000000005093000-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 1192 set thread context of 192	1192	qt8hpBzVEeH1O8B.exe	78

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2292	192	WerFault.exe	78

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2116	REG.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
1192	qt8hpBzVEeH1O8B.exe
1192	qt8hpBzVEeH1O8B.exe
1192	qt8hpBzVEeH1O8B.exe
1192	qt8hpBzVEeH1O8B.exe
192	RegSvcs.exe
192	RegSvcs.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	qt8hpBzVEeH1O8B.exe
Token: SeDebugPrivilege	192	RegSvcs.exe
Token: SeRestorePrivilege	2292	WerFault.exe
Token: SeBackupPrivilege	2292	WerFault.exe
Token: SeDebugPrivilege	2292	WerFault.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 2428	1192	qt8hpBzVEeH1O8B.exe	76
PID 1192 wrote to memory of 2428	1192	qt8hpBzVEeH1O8B.exe	76
PID 1192 wrote to memory of 2428	1192	qt8hpBzVEeH1O8B.exe	76
PID 1192 wrote to memory of 220	1192	qt8hpBzVEeH1O8B.exe	77
PID 1192 wrote to memory of 220	1192	qt8hpBzVEeH1O8B.exe	77
PID 1192 wrote to memory of 220	1192	qt8hpBzVEeH1O8B.exe	77
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 1192 wrote to memory of 192	1192	qt8hpBzVEeH1O8B.exe	78
PID 192 wrote to memory of 2116	192	RegSvcs.exe	81
PID 192 wrote to memory of 2116	192	RegSvcs.exe	81
PID 192 wrote to memory of 2116	192	RegSvcs.exe	81

C:\Users\Admin\AppData\Local\Temp\qt8hpBzVEeH1O8B.exe
"C:\Users\Admin\AppData\Local\Temp\qt8hpBzVEeH1O8B.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:2428
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:220
- 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:192
- - 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:2116
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 192 -s 1488
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2292

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/192-9-0x0000000000400000-0x0000000000452000-memory.dmp

Download

memory/192-11-0x0000000073D20000-0x000000007440E000-memory.dmp

Download

memory/192-16-0x0000000004A30000-0x0000000004A31000-memory.dmp

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memory/192-17-0x0000000005600000-0x0000000005601000-memory.dmp

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memory/1192-8-0x00000000051E0000-0x00000000051E1000-memory.dmp

Download

memory/1192-0-0x0000000073D20000-0x000000007440E000-memory.dmp

Download

memory/1192-7-0x0000000005040000-0x0000000005093000-memory.dmp

Download

memory/1192-6-0x0000000004D80000-0x0000000004D83000-memory.dmp

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memory/1192-5-0x0000000004D50000-0x0000000004D51000-memory.dmp

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memory/1192-4-0x0000000004BF0000-0x0000000004BF1000-memory.dmp

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memory/1192-3-0x0000000005280000-0x0000000005281000-memory.dmp

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memory/1192-1-0x0000000000350000-0x0000000000351000-memory.dmp

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memory/2292-20-0x00000000045C0000-0x00000000045C1000-memory.dmp

Download

memory/2292-19-0x00000000041C0000-0x00000000041C1000-memory.dmp

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