agenttesla | 5d7566ee48f7c1525a1d0e5cf2e5463929d7ad9fe55519acec2a4fcb19507f7e

General

Target

Picture.exe
Size

918KB
MD5

cf43b0fc3cf4393bb542bd212a1af029
SHA1

44ff1cbf0831d6176bd6e98a46f354800e9d09d0
SHA256

5d7566ee48f7c1525a1d0e5cf2e5463929d7ad9fe55519acec2a4fcb19507f7e
SHA512

5279f393b145d8a4b0672ce5f75f8f777919e0b82ff3a7c3637e5753194fbbd4ace3a173e77d670ad7ab7f0d3cf5a33b65a3bb047cb16349178aea137382e04c

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1802838691:AAHG-LDFE4ym6sqdeNCoNwT9JyuuNVsehko/sendDocument

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

Picture.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" Picture.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	Picture.exe

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1172-135-0x000000000043770E-mapping.dmp	family_agenttesla
behavioral2/memory/1172-134-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/1172-143-0x0000000005100000-0x00000000055FE000-memory.dmp	family_agenttesla

Executes dropped EXE 4 IoCs

Processes:

Picture.exePicture.exePicture.exePicture.exe

pid process

2044 Picture.exe
3156 Picture.exe
1504 Picture.exe
1172 Picture.exe
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
T1081
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
T1081
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
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Picture.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\iservice.exe = "C:\\Users\\Admin\\AppData\\Roaming\\iservice.exe\\iservice.exe.exe"	Picture.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Picture.exe

description pid process target process

PID 2044 set thread context of 1172 2044 Picture.exe Picture.exe

description	pid	process	target process
PID 2044 set thread context of 1172	2044	Picture.exe	Picture.exe

Drops file in Program Files directory 55 IoCs

Processes:

Picture.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Temp\GUM1CBD.tmp\GOFB2B~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOBD5D~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	Picture.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\armsvc.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~3.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	Picture.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GO664E~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	Picture.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOF5E2~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~4.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~2.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	Picture.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	Picture.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.exe	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	Picture.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	Picture.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	Picture.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	Picture.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	Picture.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	Picture.exe

Drops file in Windows directory 1 IoCs

Processes:

Picture.exe

description ioc process

File opened for modification C:\Windows\svchost.com Picture.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

Picture.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" Picture.exe

description	ioc	process
File opened for modification	C:\Windows\svchost.com	Picture.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	Picture.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

Picture.exePicture.exe

pid	process
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
2044	Picture.exe
1172	Picture.exe
1172	Picture.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Picture.exePicture.exe

description pid process

Token: SeDebugPrivilege 2044 Picture.exe
Token: SeDebugPrivilege 1172 Picture.exe

description	pid	process
Token: SeDebugPrivilege	2044	Picture.exe
Token: SeDebugPrivilege	1172	Picture.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Picture.exePicture.exe

description	pid	process	target process
PID 3212 wrote to memory of 2044	3212	Picture.exe	Picture.exe
PID 3212 wrote to memory of 2044	3212	Picture.exe	Picture.exe
PID 3212 wrote to memory of 2044	3212	Picture.exe	Picture.exe
PID 2044 wrote to memory of 3156	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 3156	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 3156	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1504	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1504	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1504	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe
PID 2044 wrote to memory of 1172	2044	Picture.exe	Picture.exe

C:\Users\Admin\AppData\Local\Temp\Picture.exe
"C:\Users\Admin\AppData\Local\Temp\Picture.exe"
1⤵
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3212

C:\Users\Admin\AppData\Local\Temp\3582-490\Picture.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\Picture.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044

C:\Users\Admin\AppData\Local\Temp\Picture.exe
C:\Users\Admin\AppData\Local\Temp\Picture.exe
3⤵
- Executes dropped EXE
PID:3156

C:\Users\Admin\AppData\Local\Temp\Picture.exe
C:\Users\Admin\AppData\Local\Temp\Picture.exe
3⤵
- Executes dropped EXE
PID:1504

C:\Users\Admin\AppData\Local\Temp\Picture.exe
C:\Users\Admin\AppData\Local\Temp\Picture.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1172

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Picture.exe.log
MD5
4a30a8132195c1aa1a62b78676b178d9

SHA1
506e6d99a2ba08c9d3553af30daaaa0fc46ae4be

SHA256
71636c227625058652c089035480b7bb3e5795f3998bc9823c401029fc844a20

SHA512
3272b5129525c2b8f7efb99f5a2115cf2572480ff6938ca80e63f02c52588216f861307b9ef962ba015787cae0d5a95e74ebb5fe4b35b34f1c4f3a7deac8ce09

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Picture.exe
MD5
dbedce8e808899925400d5054a0c23f5

SHA1
74bd0fb71ffb36f8b8328969f1db3a815904127f

SHA256
65ad5de571c458b30af37b85e2201a843c3e35ee90e358fa04e6b90fefe2e315

SHA512
ed6c86e9ae609088f3498b0fb07736234257d74d3f15b28f54beac8d90a1ca0014ce40c44958f92def621d6da176786be359029f9f2b898092228b0b55fc47dc

Download Submit
memory/1172-148-0x0000000005100000-0x00000000055FE000-memory.dmp

Filesize
5.0MB

Download
memory/1172-142-0x00000000052E0000-0x00000000052E1000-memory.dmp

Filesize
4KB

Download
memory/1172-143-0x0000000005100000-0x00000000055FE000-memory.dmp

Filesize
5.0MB

Download
memory/1172-144-0x0000000005DF0000-0x0000000005DF1000-memory.dmp

Filesize
4KB

Download
memory/1172-134-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1172-135-0x000000000043770E-mapping.dmp

Download
memory/1172-145-0x0000000005E80000-0x0000000005E81000-memory.dmp

Filesize
4KB

Download
memory/2044-121-0x0000000004E70000-0x0000000004E71000-memory.dmp

Filesize
4KB

Download
memory/2044-131-0x0000000004E40000-0x000000000533E000-memory.dmp

Filesize
5.0MB

Download
memory/2044-130-0x0000000008BA0000-0x0000000008BA1000-memory.dmp

Filesize
4KB

Download
memory/2044-129-0x00000000089A0000-0x0000000008A16000-memory.dmp

Filesize
472KB

Download
memory/2044-124-0x0000000006F40000-0x0000000006F41000-memory.dmp

Filesize
4KB

Download
memory/2044-123-0x0000000006E60000-0x0000000006EBB000-memory.dmp

Filesize
364KB

Download
memory/2044-122-0x0000000004E40000-0x000000000533E000-memory.dmp

Filesize
5.0MB

Download
memory/2044-114-0x0000000000000000-mapping.dmp

Download
memory/2044-120-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

Filesize
4KB

Download
memory/2044-119-0x0000000005340000-0x0000000005341000-memory.dmp

Filesize
4KB

Download
memory/2044-117-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download

pid	process
2044	Picture.exe
3156	Picture.exe
1504	Picture.exe
1172	Picture.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads