4d9425f1d299292fa3bb48af8f8e24e0df5b9412683df7bb8ce372db6f9f9f99

Analysis

max time kernel
119s
max time network
17s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
02/08/2024, 18:54

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General

Target

c49441f4f9c7593eec62001337f6c0a0N.exe
Size

2.6MB
MD5

c49441f4f9c7593eec62001337f6c0a0
SHA1

a1bd029957bec6e2481a66ca09147240fe3fd2a1
SHA256

4d9425f1d299292fa3bb48af8f8e24e0df5b9412683df7bb8ce372db6f9f9f99
SHA512

711658ac8908c6e15cc6bcf9b575e73ffa6ba2e050ca7da7e02479a7d6a6fb9a33228a06c314df9daa09d312791ca744db89107509ed7c7f1f90d74c39203377
SSDEEP

49152:sxX7665YxRVplZzSKntlGIiT+HvRdpcAHSjpjK3LBxB/bS:sxX7QnxrloE5dpUpKb

Score

9^/10

credential_access discovery persistence spyware stealer

Malware Config

Signatures

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sysxopti.exe	c49441f4f9c7593eec62001337f6c0a0N.exe

Executes dropped EXE 2 IoCs

pid	Process
2804	sysxopti.exe
2708	adobsys.exe

Loads dropped DLL 2 IoCs

pid	Process
1508	c49441f4f9c7593eec62001337f6c0a0N.exe
1508	c49441f4f9c7593eec62001337f6c0a0N.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Parametr = "C:\\KaVB1N\\optidevsys.exe"	c49441f4f9c7593eec62001337f6c0a0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Parametr = "C:\\AdobeFX\\adobsys.exe"	c49441f4f9c7593eec62001337f6c0a0N.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysxopti.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	adobsys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c49441f4f9c7593eec62001337f6c0a0N.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1508	c49441f4f9c7593eec62001337f6c0a0N.exe
1508	c49441f4f9c7593eec62001337f6c0a0N.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe
2804	sysxopti.exe
2708	adobsys.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2804	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	30
PID 1508 wrote to memory of 2804	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	30
PID 1508 wrote to memory of 2804	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	30
PID 1508 wrote to memory of 2804	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	30
PID 1508 wrote to memory of 2708	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	31
PID 1508 wrote to memory of 2708	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	31
PID 1508 wrote to memory of 2708	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	31
PID 1508 wrote to memory of 2708	1508	c49441f4f9c7593eec62001337f6c0a0N.exe	31

C:\Users\Admin\AppData\Local\Temp\c49441f4f9c7593eec62001337f6c0a0N.exe
"C:\Users\Admin\AppData\Local\Temp\c49441f4f9c7593eec62001337f6c0a0N.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sysxopti.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sysxopti.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2804
- C:\AdobeFX\adobsys.exe
  C:\AdobeFX\adobsys.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\AdobeFX\adobsys.exe

Filesize
2.6MB

MD5
56792e45b2b0e1fb6c2cf466ee62de07

SHA1
d172732cf0627bbeb23330e2892b22cf7619f2d6

SHA256
18f63c9bdada7c2341d00e743c6faa2f22475ae499b6f27d9fce3e65c9ea9acd

SHA512
b04df3f0652cfcbeee5a6974e23c6e40199e99183a52e6e4885e626efa0f10c756d55d0a671c5dbc6d14662adb43f50325d6818fc17fdc3d86fde70bf25cad2f

Download Submit
C:\KaVB1N\optidevsys.exe

Filesize
2.6MB

MD5
d89ded574a06c3fa08ddb8969c98ced2

SHA1
57a5f52e4cd971c06ee9ec3b2206fcfdfbb25815

SHA256
e0f71fd76299907a2d186c5876e5185dd83b9e3b31d38d453d39eaea527bf691

SHA512
5f9f92a31c4a78dbeaa00f071a1017753800ef0bec425942e1039d610dd64778ae5f20a57ab5634b669a808c76aa256cbb6aee53857a7b4be6685d950b768940

Download Submit
C:\KaVB1N\optidevsys.exe

Filesize
2.6MB

MD5
efdc34d6b77bb69ee923ca962afd9d49

SHA1
e2bcba9ac969ae2c01afa90237f996b1c35b6c63

SHA256
0de31dde640fbeef692e176dcac3dcc04a88fa0692628ca207f5797e6b7b9f70

SHA512
1e7c350a57bae0f505a150cf5569d1e80ec4fb438fc0381606959a32833fad4ebe73931cd915344e2aa3449862c84eb861ccb0c052515d87f97fa6b55a41ab60

Download Submit
C:\Users\Admin\253086396416_6.1_Admin.ini

Filesize
172B

MD5
b2ef51a0280d09e8e6b99e3553ddf9b5

SHA1
4d8a2f8568ad8f632232b9f1d13b0b28a34f6848

SHA256
c046c753fab74ac456bf63cea87671827cf35b00fefc82e381d5df1cdf69723b

SHA512
f4bd23ed05e0a22c4706480bed119f7b67b8ea161f95edcea52495d17cf99b6dcef72a4f254cb5b0bf9728b2ea294a434b4488941e8bbd63bc1ebcf40451921c

Download Submit
C:\Users\Admin\253086396416_6.1_Admin.ini

Filesize
204B

MD5
02543d26c2ca354fc2f510f9b6a4e5df

SHA1
fb8d061160bf36dd59cb6dcfd77be28f9d736aac

SHA256
7ac68ded57c5a855ee7c7ce3ea79a4b2a8c7ae8aadf2b2ee6d57db111c03e6ad

SHA512
e82ac77319a938e6efea4e65aaf48c2826019a6c69f211260103f8772c680690529ac946968095862611160badd0c61c2e3443e19a26278b16044870db7fbaa7

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sysxopti.exe

Filesize
2.6MB

MD5
365dea60d211ee845684d1c7bcda5341

SHA1
1e551fae6bee7ab9510c876b893714c6cdcafa51

SHA256
33984e48d80eaebe7ffbdf9390342bb47305771bc28a5530000c1cb4ad2b614a

SHA512
abd9839176bd874b309c87e695c982bcddf20e0661800e0df249275fab96e7985d1a1b36897322431d16074dc06306794ebaed09d9f10d92b0da0015695f51d5

Download Submit