agenttesla | 02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8

Analysis

max time kernel
561s
max time network
398s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
28-03-2023 06:33

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General

Target

02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe
Size

541KB
MD5

841df4aadcf2ba0ef0a1bfe3a421c7bc
SHA1

5b3d870d348f52908b8871f16ad8f6edfbac08c3
SHA256

02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8
SHA512

41ac5cc1ec3599f8d2921b7e2a48636b66c661631bc5c920aff3c5e0dc7915ca79d29814d3c293e84c522417f2dd0d4171c3cf4b1b8ef537a8a6d6b07b65f531
SSDEEP

6144:WYa6Bv7p3QTwn5M11k+zsndP21nktxtlfzw/5kb1wmO4zhOVJeUsK73b1KYr0hgP:WYfzFQTwM16+sdenmS5kbiiUsKLb13F

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Executes dropped EXE 2 IoCs

Processes:

kofssc.exekofssc.exe

pid process

268 kofssc.exe
616 kofssc.exe
Loads dropped DLL 2 IoCs

Processes:

02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exekofssc.exe

pid process

1948 02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe
268 kofssc.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

pid	process
268	kofssc.exe
616	kofssc.exe

pid	process
1948	02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe
268	kofssc.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

kofssc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kofssc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kofssc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kofssc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

kofssc.exekofssc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\bwgp = "C:\\Users\\Admin\\AppData\\Roaming\\xdyirnwgclhqae\\njsoxhdmvr.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\kofssc.exe\" C:\\Users\\Admin\\AppData"	kofssc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\VvcPRR = "C:\\Users\\Admin\\AppData\\Roaming\\VvcPRR\\VvcPRR.exe"	kofssc.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 api.ipify.org
4 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

kofssc.exe

description pid process target process

PID 268 set thread context of 616 268 kofssc.exe kofssc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

kofssc.exe

pid process

268 kofssc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

kofssc.exe

description pid process

Token: SeDebugPrivilege 616 kofssc.exe

flow	ioc
3	api.ipify.org
4	api.ipify.org

description	pid	process	target process
PID 268 set thread context of 616	268	kofssc.exe	kofssc.exe

pid	process
268	kofssc.exe

description	pid	process
Token: SeDebugPrivilege	616	kofssc.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exekofssc.exe

description	pid	process	target process
PID 1948 wrote to memory of 268	1948	02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe	kofssc.exe
PID 1948 wrote to memory of 268	1948	02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe	kofssc.exe
PID 1948 wrote to memory of 268	1948	02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe	kofssc.exe
PID 1948 wrote to memory of 268	1948	02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe	kofssc.exe
PID 268 wrote to memory of 616	268	kofssc.exe	kofssc.exe
PID 268 wrote to memory of 616	268	kofssc.exe	kofssc.exe
PID 268 wrote to memory of 616	268	kofssc.exe	kofssc.exe
PID 268 wrote to memory of 616	268	kofssc.exe	kofssc.exe
PID 268 wrote to memory of 616	268	kofssc.exe	kofssc.exe

outlook_office_path 1 IoCs

Processes:

kofssc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kofssc.exe

outlook_win_path 1 IoCs

Processes:

kofssc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kofssc.exe

C:\Users\Admin\AppData\Local\Temp\02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe
"C:\Users\Admin\AppData\Local\Temp\02d64b9cbd5268cec49399d35962acaac4e4548b96b0775b315811bc0c23c7e8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948

C:\Users\Admin\AppData\Local\Temp\kofssc.exe
"C:\Users\Admin\AppData\Local\Temp\kofssc.exe" C:\Users\Admin\AppData\Local\Temp\okzwmmqrv.z
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:268

C:\Users\Admin\AppData\Local\Temp\kofssc.exe
"C:\Users\Admin\AppData\Local\Temp\kofssc.exe"
3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:616

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

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kofssc.exe
Filesize
130KB

MD5
c14478f2d0cdca05383387b081354cfc

SHA1
672f1d9a6e0ae1866f4185d510c13c782a734058

SHA256
2b0a6eabb4f31964cd38970d3c3851a142e9dd2d0a99ce4804c640c9b7a928ee

SHA512
4443700de4b23c4a5bbd9b87c8879f6b6267fbde3fbd7832b395766dfcde263aec5898bd4a4c519771c99ac1d6ffdcd6e07489928bf8aa7eaed77c5f36060a8a

Download Submit
C:\Users\Admin\AppData\Local\Temp\kofssc.exe
Filesize
130KB

MD5
c14478f2d0cdca05383387b081354cfc

SHA1
672f1d9a6e0ae1866f4185d510c13c782a734058

SHA256
2b0a6eabb4f31964cd38970d3c3851a142e9dd2d0a99ce4804c640c9b7a928ee

SHA512
4443700de4b23c4a5bbd9b87c8879f6b6267fbde3fbd7832b395766dfcde263aec5898bd4a4c519771c99ac1d6ffdcd6e07489928bf8aa7eaed77c5f36060a8a

Download Submit
C:\Users\Admin\AppData\Local\Temp\kofssc.exe
Filesize
130KB

MD5
c14478f2d0cdca05383387b081354cfc

SHA1
672f1d9a6e0ae1866f4185d510c13c782a734058

SHA256
2b0a6eabb4f31964cd38970d3c3851a142e9dd2d0a99ce4804c640c9b7a928ee

SHA512
4443700de4b23c4a5bbd9b87c8879f6b6267fbde3fbd7832b395766dfcde263aec5898bd4a4c519771c99ac1d6ffdcd6e07489928bf8aa7eaed77c5f36060a8a

Download Submit
C:\Users\Admin\AppData\Local\Temp\okzwmmqrv.z
Filesize
7KB

MD5
0736cfb1c372bc1cdecd835b36ea47b2

SHA1
226a90103e5393a46c9dc618599900fae3228352

SHA256
480343f765c169bb1b61700dac434324ef497ae34970c0dc4b2ab86ed3610839

SHA512
edcf2e9a020c766195fef46a5ec2c18272daac1755ffefc1843af7b1529efa3ffbddae2cf76ec3f8016fc0370e7fa4bb8554d1b2fe29c78adea6783e72686662

Download Submit
C:\Users\Admin\AppData\Local\Temp\zblcf.k
Filesize
263KB

MD5
42c612dfebd3cdb18c31b6690f432bde

SHA1
10f2ed2156ed0993d09488eda8dbf91cea1de909

SHA256
dc47d65610d5296cc84b94d4a5372f2fca4de071ccead4312cf11899aaede691

SHA512
768468b06aa70fb55821a42b1fbf6362af836c71c0908ccc51cf55828bf600c890de0803d815cd5ff270e67db6de1447d40525d33a23cd930ba60cbb4231c8c0

Download Submit
\Users\Admin\AppData\Local\Temp\kofssc.exe
Filesize
130KB

MD5
c14478f2d0cdca05383387b081354cfc

SHA1
672f1d9a6e0ae1866f4185d510c13c782a734058

SHA256
2b0a6eabb4f31964cd38970d3c3851a142e9dd2d0a99ce4804c640c9b7a928ee

SHA512
4443700de4b23c4a5bbd9b87c8879f6b6267fbde3fbd7832b395766dfcde263aec5898bd4a4c519771c99ac1d6ffdcd6e07489928bf8aa7eaed77c5f36060a8a

Download Submit
\Users\Admin\AppData\Local\Temp\kofssc.exe
Filesize
130KB

MD5
c14478f2d0cdca05383387b081354cfc

SHA1
672f1d9a6e0ae1866f4185d510c13c782a734058

SHA256
2b0a6eabb4f31964cd38970d3c3851a142e9dd2d0a99ce4804c640c9b7a928ee

SHA512
4443700de4b23c4a5bbd9b87c8879f6b6267fbde3fbd7832b395766dfcde263aec5898bd4a4c519771c99ac1d6ffdcd6e07489928bf8aa7eaed77c5f36060a8a

Download Submit
memory/616-67-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/616-71-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/616-72-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/616-73-0x0000000000760000-0x0000000000790000-memory.dmp

Filesize
192KB

Download
memory/616-75-0x0000000004640000-0x0000000004680000-memory.dmp

Filesize
256KB

Download
memory/616-76-0x0000000004640000-0x0000000004680000-memory.dmp

Filesize
256KB

Download
memory/616-74-0x0000000004640000-0x0000000004680000-memory.dmp

Filesize
256KB

Download
memory/616-95-0x0000000004640000-0x0000000004680000-memory.dmp

Filesize
256KB

Download