agenttesla | 55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527

Analysis

max time kernel
142s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:30

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General

Target

55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
Size

542KB
MD5

a5b21b2b487ef822fa7564a5a6833e10
SHA1

658b3e8680f568b6ae557bbc14cefbf8ce6cc54d
SHA256

55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527
SHA512

8f3bde613d093b50277a60accfea4adf8e7c5eaccc9bfbe2684e6271ed20e6e3ebe38c9ce20b9f820a628b0deb48a3f0c4f9907af42dcd540ab6ae5c8ae804a6
SSDEEP

12288:reCLyNx2qdIzjxxtoHzWb+xDuKLDKg4rUQqS0JFy/ykYPEvGT+KsjE:rebNwqaz9jszK+xiKvt4rUM0JFyFYPg8

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
[email protected]
Password:
behw orok mlzk zmzt
Email To:
[email protected]

Signatures

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

Detect packed .NET executables. Mostly AgentTeslaV4. 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables referencing Windows vault credential objects. Observed in infostealers 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Loads dropped DLL 2 IoCs

pid	Process
2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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

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
7	api.ipify.org
6	api.ipify.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\kaleb.ini	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2504	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
2504	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\skitserer.ini	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2504	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
2504	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28
PID 2264 wrote to memory of 2504	2264	55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe	28

C:\Users\Admin\AppData\Local\Temp\55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
"C:\Users\Admin\AppData\Local\Temp\55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Users\Admin\AppData\Local\Temp\55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe
  "C:\Users\Admin\AppData\Local\Temp\55803a4227e0110d88300cd0ea5c98d479738a2a33be1d07702301eb1fc37527.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

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\Temp\nsy1F38.tmp

Filesize
1B

MD5
8ce4b16b22b58894aa86c421e8759df3

SHA1
13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

SHA256
8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

SHA512
2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
2B

MD5
25bc6654798eb508fa0b6343212a74fe

SHA1
15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

SHA256
8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

SHA512
5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
3B

MD5
4e27f2226785e9abbe046fc592668860

SHA1
28b18a7f383131df509f7191f946a32c5a2e410c

SHA256
01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

SHA512
2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
4B

MD5
cde63b34c142af0a38cbe83791c964f8

SHA1
ece2b194b486118b40ad12c1f0e9425dd0672424

SHA256
65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

SHA512
0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
5B

MD5
e2fecc970546c3418917879fe354826c

SHA1
63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

SHA256
ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

SHA512
3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
6B

MD5
50484c19f1afdaf3841a0d821ed393d2

SHA1
c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

SHA256
6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

SHA512
d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
7B

MD5
67cfa7364c4cf265b047d87ff2e673ae

SHA1
56e27889277981a9b63fcf5b218744a125bbc2fa

SHA256
639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

SHA512
17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
8B

MD5
c3cb69218b85c3260387fb582cb518dd

SHA1
961c892ded09a4cbb5392097bb845ccba65902ad

SHA256
1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

SHA512
2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
9B

MD5
2b3884fe02299c565e1c37ee7ef99293

SHA1
d8e2ef2a52083f6df210109fea53860ea227af9c

SHA256
ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

SHA512
aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1F38.tmp

Filesize
10B

MD5
9a53fc1d7126c5e7c81bb5c15b15537b

SHA1
e2d13e0fa37de4c98f30c728210d6afafbb2b000

SHA256
a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

SHA512
b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

Download Submit
C:\Windows\SysWOW64\kaleb.ini

Filesize
45B

MD5
9dfd97e7025bf54441fe6759f87e5ddf

SHA1
0f04ae6a7bc2213255fc72898f339b12bd743f24

SHA256
eea1bdc93e5a8fcbca0aea236d83b487ad2af028095a0d0107f02d397b4372fb

SHA512
08ea09b23814906f040060b46d919d45f6aee0c96b27d0baa88813bc46032c274546adb89e354b78f659c962a8588adbbd49966951e1f1b097e2484a07678f44

Download Submit
\Users\Admin\AppData\Local\Temp\nsd1C49.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
memory/2264-841-0x0000000077881000-0x0000000077982000-memory.dmp

Filesize
1.0MB

Download
memory/2264-842-0x0000000077880000-0x0000000077A29000-memory.dmp

Filesize
1.7MB

Download
memory/2504-843-0x0000000077880000-0x0000000077A29000-memory.dmp

Filesize
1.7MB

Download
memory/2504-844-0x0000000000490000-0x00000000014F2000-memory.dmp

Filesize
16.4MB

Download
memory/2504-845-0x0000000000490000-0x00000000004D2000-memory.dmp

Filesize
264KB

Download