purplefox | d9c73323bc1f6fb31137e8e0ecec6bbcad6d91e10bccf06948e0d3446e05c23a

Analysis

max time kernel
120s
max time network
138s
platform
windows7_x64
resource
win7-en-20211208
submitted
14-01-2022 07:11

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General

Target

WhatsAppSetupr.exe
Size

117KB
MD5

83e71f37df8557d87bb44c4c64396802
SHA1

e1ceb77f3a29cd314d047d1bf6e2f984d81bde4d
SHA256

d9c73323bc1f6fb31137e8e0ecec6bbcad6d91e10bccf06948e0d3446e05c23a
SHA512

ddd4c57fbfecfd4398fd5b9b5c628f542d6bf2adb550d8b9748d56c1075ebbc12e15aff72c2b62008d51bc5640b189bb87935f254fc8b1ccbc620f3970aa3c49

Score

10^/10

purplefox loader dropper loader rootkit suricata trojan

Malware Config

Extracted

Family

purplefox

Signatures

Detect PurpleFox Dropper 5 IoCs

Detect PurpleFox Dropper.

dropper loader

Processes:

yara_rule
purplefox_dropper
purplefox_dropper
C:\Users\Public\Videos\1642144276\svchost.txt	purplefox_dropper
C:\ProgramData\svchost.txt	purplefox_dropper
behavioral1/memory/836-74-0x0000000001EB0000-0x00000000026EE000-memory.dmp	purplefox_dropper

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

yara_rule
purplefox_rootkit
purplefox_rootkit
C:\Users\Public\Videos\1642144276\svchost.txt	purplefox_rootkit
C:\ProgramData\svchost.txt	purplefox_rootkit
behavioral1/memory/836-74-0x0000000001EB0000-0x00000000026EE000-memory.dmp	purplefox_rootkit

PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
suricata: ET MALWARE OneLouder EXE download possibly installing Zeus P2P
suricata: ET MALWARE OneLouder EXE download possibly installing Zeus P2P
suricata
suricata: ET MALWARE Probable OneLouder downloader (Zeus P2P) exe download
suricata: ET MALWARE Probable OneLouder downloader (Zeus P2P) exe download
suricata
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Checkin
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Checkin
suricata
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Request M1
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Request M1
suricata
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Server Response M1
suricata: ET MALWARE PurpleFox Backdoor/Rootkit Download Server Response M1
suricata
Executes dropped EXE 2 IoCs

Processes:

7zz.exeojbkcg.exe

pid process

1620 7zz.exe
836 ojbkcg.exe
Loads dropped DLL 5 IoCs

Processes:

WhatsAppSetupr.exeojbkcg.exe

pid process

832 WhatsAppSetupr.exe
832 WhatsAppSetupr.exe
836 ojbkcg.exe
1352
1352

pid	process
1620	7zz.exe
836	ojbkcg.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

ojbkcg.exe

description	ioc	process
File opened (read-only)	\??\I:	ojbkcg.exe
File opened (read-only)	\??\L:	ojbkcg.exe
File opened (read-only)	\??\T:	ojbkcg.exe
File opened (read-only)	\??\Z:	ojbkcg.exe
File opened (read-only)	\??\B:	ojbkcg.exe
File opened (read-only)	\??\E:	ojbkcg.exe
File opened (read-only)	\??\F:	ojbkcg.exe
File opened (read-only)	\??\K:	ojbkcg.exe
File opened (read-only)	\??\P:	ojbkcg.exe
File opened (read-only)	\??\R:	ojbkcg.exe
File opened (read-only)	\??\M:	ojbkcg.exe
File opened (read-only)	\??\N:	ojbkcg.exe
File opened (read-only)	\??\Q:	ojbkcg.exe
File opened (read-only)	\??\V:	ojbkcg.exe
File opened (read-only)	\??\Y:	ojbkcg.exe
File opened (read-only)	\??\G:	ojbkcg.exe
File opened (read-only)	\??\H:	ojbkcg.exe
File opened (read-only)	\??\J:	ojbkcg.exe
File opened (read-only)	\??\O:	ojbkcg.exe
File opened (read-only)	\??\S:	ojbkcg.exe
File opened (read-only)	\??\U:	ojbkcg.exe
File opened (read-only)	\??\W:	ojbkcg.exe
File opened (read-only)	\??\X:	ojbkcg.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ojbkcg.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ojbkcg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ojbkcg.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

WhatsAppSetupr.exeojbkcg.exe

pid	process
832	WhatsAppSetupr.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe
836	ojbkcg.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WhatsAppSetupr.exe

description	pid	process	target process
PID 832 wrote to memory of 1620	832	WhatsAppSetupr.exe	7zz.exe
PID 832 wrote to memory of 1620	832	WhatsAppSetupr.exe	7zz.exe
PID 832 wrote to memory of 1620	832	WhatsAppSetupr.exe	7zz.exe
PID 832 wrote to memory of 1620	832	WhatsAppSetupr.exe	7zz.exe
PID 832 wrote to memory of 836	832	WhatsAppSetupr.exe	ojbkcg.exe
PID 832 wrote to memory of 836	832	WhatsAppSetupr.exe	ojbkcg.exe
PID 832 wrote to memory of 836	832	WhatsAppSetupr.exe	ojbkcg.exe
PID 832 wrote to memory of 836	832	WhatsAppSetupr.exe	ojbkcg.exe

C:\Users\Admin\AppData\Local\Temp\WhatsAppSetupr.exe
"C:\Users\Admin\AppData\Local\Temp\WhatsAppSetupr.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:832
- C:\Users\Public\Videos\1642144276\7zz.exe
  "C:\Users\Public\Videos\1642144276\7zz.exe" X -ep2 C:\Users\Public\Videos\1642144276\1.rar C:\Users\Public\Videos\1642144276
  2⤵
  - Executes dropped EXE
  PID:1620
- C:\Users\Public\Videos\1642144276\ojbkcg.exe
  "C:\Users\Public\Videos\1642144276\ojbkcg.exe" -a
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Enumerates connected drives
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\svchost.txt

Filesize
8.2MB

MD5
0d2422983c8b4cafec017b7dc3399aff

SHA1
d6dd2c41b665b32290e78394769e7b6e39585dfa

SHA256
82490fa7297344ca9c37f901cbc5c43c5db51bba4b4a390589db0973d70475e4

SHA512
e8cdea9b3c31be2c0256e6c3f3a376b359cf64f34061b49669fa1a9cb3602137e8a6076ec600b113569a5a8c4fed2e921074071ba6cfd601b4f6428a1f8989f1

Download Submit
C:\Users\Public\Videos\1642144276\1.rar

Filesize
2.4MB

MD5
2e7da7811dad552ccf70f1709bc63217

SHA1
7b70d762a8dc03c8a21aff160f05980cddea1cc7

SHA256
4aedfa5435009376cefe26b5c4d6f27664937a60acdbc2370495133ffea0ae37

SHA512
9f17ef61cb59c001e23ac1906aab3ac3a301b58b32a1886eadb8ace56fac571257f41ab3c26bde222dea9461768711af47fa9c29064786fb38c1967ba277b4a1

Download Submit
C:\Users\Public\Videos\1642144276\360.tct

Filesize
176KB

MD5
d618435291031e2b7e9320979e38a66d

SHA1
0a020603f9f532f404699b3429514691c1d2e3a8

SHA256
23562138f7bf1524b009520abadd3a2450c73955891ac92c67fd66dc59de66de

SHA512
0075abdbe7c75c32677aaff1a67adbe0db611e75879171cd5f6e2bdebbbdf8e9d1ab20bb192fae8f7f3aa98526d02f79f29b9ab96f5dca3d144a51cb2ac7dbd9

Download Submit
C:\Users\Public\Videos\1642144276\7zz.exe

Filesize
572KB

MD5
f2ae502d448cfb81a5f40a9368d99b1a

SHA1
f849be86e9e7ced0acd51a68f92992b8090d08a5

SHA256
07ad4b984f288304003b080dd013784685181de4353a0b70a0247f96e535bd56

SHA512
9f3aea471684e22bf9fc045ca0e47a8429fa0b13c188f9c7a51937efa8afcec976761b0c4c95aed7735096fcc2278bbd86b0ab581261a6aff6c694d7bb65e9be

Download Submit
C:\Users\Public\Videos\1642144276\ojbkcg.exe

Filesize
90KB

MD5
b279a37b23d236e4cea9f950e36404d3

SHA1
26c3b45ba41870af8c69308a5af59e319060fefe

SHA256
3a883d751c5eb2fa4c3121313fe1db49043cea44af200a6e4295de13794f8878

SHA512
92ecc11fa19894369c6aca7d86ac4eca51b89829871b7358a6a5fef2a22de49ef7fcc6a404b278d19fcacf37e6a577764a05b3eab75fee9bdad18b1478b08ed4

Download Submit
C:\Users\Public\Videos\1642144276\ojbkcg.exe

Filesize
90KB

MD5
b279a37b23d236e4cea9f950e36404d3

SHA1
26c3b45ba41870af8c69308a5af59e319060fefe

SHA256
3a883d751c5eb2fa4c3121313fe1db49043cea44af200a6e4295de13794f8878

SHA512
92ecc11fa19894369c6aca7d86ac4eca51b89829871b7358a6a5fef2a22de49ef7fcc6a404b278d19fcacf37e6a577764a05b3eab75fee9bdad18b1478b08ed4

Download Submit
C:\Users\Public\Videos\1642144276\rundll3222.exe

Filesize
45KB

MD5
c36bb659f08f046b139c8d1b980bf1ac

SHA1
dd3247b225a8da3161f76055f31cbc5f64a66086

SHA256
405f03534be8b45185695f68deb47d4daf04dcd6df9d351ca6831d3721b1efc4

SHA512
3eeae6a3b424fa1709b4443f625ee99fa2d2861661214b868d36bf5a63c0aaac61ad3bdd9c4b18cb9d820ef89653787df812289d31d65415c4dd08fd45d0c73f

Download Submit
C:\Users\Public\Videos\1642144276\svchost.txt

Filesize
8.2MB

MD5
0d2422983c8b4cafec017b7dc3399aff

SHA1
d6dd2c41b665b32290e78394769e7b6e39585dfa

SHA256
82490fa7297344ca9c37f901cbc5c43c5db51bba4b4a390589db0973d70475e4

SHA512
e8cdea9b3c31be2c0256e6c3f3a376b359cf64f34061b49669fa1a9cb3602137e8a6076ec600b113569a5a8c4fed2e921074071ba6cfd601b4f6428a1f8989f1

Download Submit
\Users\Public\Videos\1642144276\360.tct

Filesize
176KB

MD5
d618435291031e2b7e9320979e38a66d

SHA1
0a020603f9f532f404699b3429514691c1d2e3a8

SHA256
23562138f7bf1524b009520abadd3a2450c73955891ac92c67fd66dc59de66de

SHA512
0075abdbe7c75c32677aaff1a67adbe0db611e75879171cd5f6e2bdebbbdf8e9d1ab20bb192fae8f7f3aa98526d02f79f29b9ab96f5dca3d144a51cb2ac7dbd9

Download Submit
\Users\Public\Videos\1642144276\7zz.exe

Filesize
572KB

MD5
f2ae502d448cfb81a5f40a9368d99b1a

SHA1
f849be86e9e7ced0acd51a68f92992b8090d08a5

SHA256
07ad4b984f288304003b080dd013784685181de4353a0b70a0247f96e535bd56

SHA512
9f3aea471684e22bf9fc045ca0e47a8429fa0b13c188f9c7a51937efa8afcec976761b0c4c95aed7735096fcc2278bbd86b0ab581261a6aff6c694d7bb65e9be

Download Submit
\Users\Public\Videos\1642144276\ojbkcg.exe

Filesize
90KB

MD5
b279a37b23d236e4cea9f950e36404d3

SHA1
26c3b45ba41870af8c69308a5af59e319060fefe

SHA256
3a883d751c5eb2fa4c3121313fe1db49043cea44af200a6e4295de13794f8878

SHA512
92ecc11fa19894369c6aca7d86ac4eca51b89829871b7358a6a5fef2a22de49ef7fcc6a404b278d19fcacf37e6a577764a05b3eab75fee9bdad18b1478b08ed4

Download Submit
\Users\Public\Videos\1642144276\ojbkcg.exe

Filesize
90KB

MD5
b279a37b23d236e4cea9f950e36404d3

SHA1
26c3b45ba41870af8c69308a5af59e319060fefe

SHA256
3a883d751c5eb2fa4c3121313fe1db49043cea44af200a6e4295de13794f8878

SHA512
92ecc11fa19894369c6aca7d86ac4eca51b89829871b7358a6a5fef2a22de49ef7fcc6a404b278d19fcacf37e6a577764a05b3eab75fee9bdad18b1478b08ed4

Download Submit
\Users\Public\Videos\1642144276\ojbkcg.exe

Filesize
90KB

MD5
b279a37b23d236e4cea9f950e36404d3

SHA1
26c3b45ba41870af8c69308a5af59e319060fefe

SHA256
3a883d751c5eb2fa4c3121313fe1db49043cea44af200a6e4295de13794f8878

SHA512
92ecc11fa19894369c6aca7d86ac4eca51b89829871b7358a6a5fef2a22de49ef7fcc6a404b278d19fcacf37e6a577764a05b3eab75fee9bdad18b1478b08ed4

Download Submit
memory/832-54-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download
memory/836-73-0x000000018085F000-0x0000000180860000-memory.dmp

Filesize
4KB

Download
memory/836-70-0x00000001803F0000-0x00000001803F4000-memory.dmp

Filesize
16KB

Download
memory/836-71-0x00000001803F4000-0x0000000180543000-memory.dmp

Filesize
1.3MB

Download
memory/836-69-0x0000000180001000-0x00000001803F0000-memory.dmp

Filesize
3.9MB

Download
memory/836-72-0x0000000180836000-0x000000018085F000-memory.dmp

Filesize
164KB

Download
memory/836-74-0x0000000001EB0000-0x00000000026EE000-memory.dmp

Filesize
8.2MB

Download
memory/836-75-0x0000000003EC1000-0x000000000416C000-memory.dmp

Filesize
2.7MB

Download
memory/836-76-0x000000000416C000-0x0000000004364000-memory.dmp

Filesize
2.0MB

Download
memory/836-77-0x0000000003EC1000-0x000000000416C000-memory.dmp

Filesize
2.7MB

Download
memory/836-65-0x0000000000000000-mapping.dmp

Download
memory/1620-56-0x0000000000000000-mapping.dmp

Download