purplefox | 2d288f2cd6752a01360f2669959e2c61f676f8156d5cc40d4b415245ae04cf6d

Resubmissions

28-01-2022 12:16

220128-pflylaccar 10

22-01-2022 08:05

220122-jyv2bsaddr 10

Analysis

max time kernel
123s
max time network
122s
platform
windows10_x64
resource
win10-en-20211208
submitted
22-01-2022 08:05

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General

Target

3ec149660a6808f711ca6cb6b20c1dda.exe
Size

658KB
MD5

3ec149660a6808f711ca6cb6b20c1dda
SHA1

45c3d1d8dd512c01fd6c897c67b35c13c49828cb
SHA256

2d288f2cd6752a01360f2669959e2c61f676f8156d5cc40d4b415245ae04cf6d
SHA512

3a15e7bfbabeb296001086453320a133dc242ef170ccf45d459d2a7f402fadfe3329099d79b368416d565ba0c16eb051b64fe7b756c21f822ab49ec483b5649d

Score

10^/10

purplefox sainbox loader dropper loader rootkit suricata trojan

Malware Config

Extracted

Family

purplefox

Botnet

Sainbox

193.218.38.93

Extracted

Family

purplefox

Signatures

Detect PurpleFox Dropper 5 IoCs

Detect PurpleFox Dropper.

dropper loader

Processes:

yara_rule
purplefox_dropper
C:\Users\Public\Videos\1639137659\svchost.txt	purplefox_dropper
C:\ProgramData\svchost.txt	purplefox_dropper
behavioral2/memory/728-188-0x0000000180000000-0x00000001808AB000-memory.dmp	purplefox_dropper
behavioral2/memory/728-193-0x00000228A3650000-0x00000228A3EC5000-memory.dmp	purplefox_dropper

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

yara_rule
purplefox_rootkit
purplefox_rootkit
C:\Users\Public\Videos\1639137659\svchost.txt	purplefox_rootkit
C:\ProgramData\svchost.txt	purplefox_rootkit
behavioral2/memory/728-188-0x0000000180000000-0x00000001808AB000-memory.dmp	purplefox_rootkit
behavioral2/memory/728-193-0x00000228A3650000-0x00000228A3EC5000-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 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
Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

7zz.exeojbkcg.exe111.exe7z.exe

pid process

3676 7zz.exe
728 ojbkcg.exe
1672 111.exe
1852 7z.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

111.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\International\Geo\Nation 111.exe

pid	process
3676	7zz.exe
728	ojbkcg.exe
1672	111.exe
1852	7z.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\International\Geo\Nation	111.exe

Drops startup file 2 IoCs

Processes:

7z.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\startup\╧╘┐¿╟²╢».lnk	7z.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\startup\╧╘┐¿╟²╢».lnk	7z.exe

Loads dropped DLL 2 IoCs

Processes:

ojbkcg.exe7z.exe

pid process

728 ojbkcg.exe
1852 7z.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
728	ojbkcg.exe
1852	7z.exe

Modifies registry class 2 IoCs

Processes:

ojbkcg.exe111.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings	ojbkcg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	111.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

3ec149660a6808f711ca6cb6b20c1dda.exe

pid process

4084 3ec149660a6808f711ca6cb6b20c1dda.exe
4084 3ec149660a6808f711ca6cb6b20c1dda.exe
Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

7z.exe

description pid process

Token: SeRestorePrivilege 1852 7z.exe
Token: 35 1852 7z.exe
Token: SeSecurityPrivilege 1852 7z.exe
Token: SeSecurityPrivilege 1852 7z.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

111.exe

pid process

1672 111.exe
1672 111.exe

pid	process
4084	3ec149660a6808f711ca6cb6b20c1dda.exe
4084	3ec149660a6808f711ca6cb6b20c1dda.exe

description	pid	process
Token: SeRestorePrivilege	1852	7z.exe
Token: 35	1852	7z.exe
Token: SeSecurityPrivilege	1852	7z.exe
Token: SeSecurityPrivilege	1852	7z.exe

pid	process
1672	111.exe
1672	111.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

3ec149660a6808f711ca6cb6b20c1dda.exe111.exe

description	pid	process	target process
PID 4084 wrote to memory of 3676	4084	3ec149660a6808f711ca6cb6b20c1dda.exe	7zz.exe
PID 4084 wrote to memory of 3676	4084	3ec149660a6808f711ca6cb6b20c1dda.exe	7zz.exe
PID 4084 wrote to memory of 3676	4084	3ec149660a6808f711ca6cb6b20c1dda.exe	7zz.exe
PID 4084 wrote to memory of 728	4084	3ec149660a6808f711ca6cb6b20c1dda.exe	ojbkcg.exe
PID 4084 wrote to memory of 728	4084	3ec149660a6808f711ca6cb6b20c1dda.exe	ojbkcg.exe
PID 1672 wrote to memory of 1852	1672	111.exe	7z.exe
PID 1672 wrote to memory of 1852	1672	111.exe	7z.exe
PID 1672 wrote to memory of 1852	1672	111.exe	7z.exe

C:\Users\Admin\AppData\Local\Temp\3ec149660a6808f711ca6cb6b20c1dda.exe
"C:\Users\Admin\AppData\Local\Temp\3ec149660a6808f711ca6cb6b20c1dda.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Users\Public\Videos\1639137659\7zz.exe
  "C:\Users\Public\Videos\1639137659\7zz.exe" X -ep2 C:\Users\Public\Videos\1639137659\1.rar C:\Users\Public\Videos\1639137659
  2⤵
  - Executes dropped EXE
  PID:3676
- C:\Users\Public\Videos\1639137659\ojbkcg.exe
  "C:\Users\Public\Videos\1639137659\ojbkcg.exe" -a
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies registry class
  PID:728

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2340

C:\Users\Public\Documents\auto\111.exe
"C:\Users\Public\Documents\auto\111.exe"
1⤵
- Executes dropped EXE
- Checks computer location settings
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1672
- C:\ProgramData\7z.exe
  "C:\ProgramData\7z.exe" x C:\ProgramData\bb.zip -oC:\Users\Admin\AppData\Roaming\Microsoft\Windows
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  PID:1852

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\222.lnk

Filesize
1KB

MD5
9ab5c0bbf40b2e1fc5f29a8e474dd215

SHA1
1d2716926c3c5086d7d10afdb5964b556e131993

SHA256
f169d795ec6f5f75547655c79d359aca5f12834f3d79662865e82af902168f29

SHA512
8a596e2aa516d3df834fa79803ace1cb8e2891f3e31876795fa40bda934ff6f97dc5023afcebf9f716c81cce498ce60bf6c1aec2ee079c13d9f534c1fa161f5b

Download Submit
C:\ProgramData\7z.dll

Filesize
1.1MB

MD5
6a9e619a0392bb5918306f7fbaa8c85b

SHA1
d18d392e078e703ef7d9ec2a4f2042d7fbbf3863

SHA256
3beecf3d764daaffc020ba89dd764b0215fbd360bfc115fbb3880ef0672b98e5

SHA512
565c8f27395c41d4778debd0dec63d6fafb703255093d6ad5aea5d8b26f768f8b7ff7b2fa37a710179d3c1c0c0f47075a471c73584eb8941ee38b9ea25dcf809

Download Submit
C:\ProgramData\7z.exe

Filesize
301KB

MD5
c808d5b1f96af6f1869d6b6cdbeffd20

SHA1
7818808f9f3f9719420d160f9c842a84eabdf73e

SHA256
921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4

SHA512
f89a936640d96e92a86fe0c84dbf3273343faf8850e691b750c916afcc4f0ac49ebe985f97279bd8033254c63eff4319721556d04491218448db992823aebe01

Download Submit
C:\ProgramData\7z.exe

Filesize
301KB

MD5
c808d5b1f96af6f1869d6b6cdbeffd20

SHA1
7818808f9f3f9719420d160f9c842a84eabdf73e

SHA256
921226944015f01f2780179690b7bfcee7b92ea452fe85cae9375e49d64ee0b4

SHA512
f89a936640d96e92a86fe0c84dbf3273343faf8850e691b750c916afcc4f0ac49ebe985f97279bd8033254c63eff4319721556d04491218448db992823aebe01

Download Submit
C:\ProgramData\bb.zip

Filesize
1KB

MD5
fd6745c7e6659a134b2388b81f743eb8

SHA1
175c4e2e49d86f4a84a5fb675a86460cbdd291c0

SHA256
793d02326504985024cd6afa21f0e1555855b59bc3a63442f0c51337ba74720a

SHA512
24611c0e585d330ff82561f3586aaa57b07c044dafd1d0513e2257ec53a4eb63a9989be2112e1c0ac5d20e62a2e3ebaa932bfa4c3e5c29d4c8aef68542c3e0f1

Download Submit
C:\ProgramData\svchost.txt

Filesize
8.5MB

MD5
5ecefaea48c5a8498b036acd8ce411a5

SHA1
501b3ed0fb6c33f6a122d603292d7fe04e8ce04f

SHA256
88dd42dedc77e8ad117cc54d7b37083bbacaa6ecb84553bda31905b0a29e0e4d

SHA512
e41a6bb1c734330dac37b9e7552053efdb46d15bf60601613baf8b5ab4be352c4d2f2d1c4e8bc4fe1616b98adfcf7b26336300b3bb724a9016e04d5820b2dd00

Download Submit
C:\Users\Public\Documents\auto\111.exe

Filesize
328KB

MD5
26d1f8cc33a7567463bfaebc2242833c

SHA1
1bd4fa5729c289a3ca1c4955f52464e4cc5ec4da

SHA256
cb201744a0f50e72ee4fda9298785fa16bfc4bf639a9474457e429278ff376bc

SHA512
01b3909272b3b25a9601cef11fd1122660a56b5220e8b3187c1b27135a23cc9aee9926761ce64ca9d8d872719da420131d83d4556c6255d20579be28d274b445

Download Submit
C:\Users\Public\Documents\auto\111.exe

Filesize
328KB

MD5
26d1f8cc33a7567463bfaebc2242833c

SHA1
1bd4fa5729c289a3ca1c4955f52464e4cc5ec4da

SHA256
cb201744a0f50e72ee4fda9298785fa16bfc4bf639a9474457e429278ff376bc

SHA512
01b3909272b3b25a9601cef11fd1122660a56b5220e8b3187c1b27135a23cc9aee9926761ce64ca9d8d872719da420131d83d4556c6255d20579be28d274b445

Download Submit
C:\Users\Public\Documents\auto\update.ini

Filesize
39B

MD5
ee5768d7d9e319e36f17476d12450785

SHA1
e08648361310618ea81b793411def40cef9e1745

SHA256
e21a77a762b943102a0bd1cd9909b4f2c310889b1e3144a1a1e39fc4f09667bf

SHA512
daff15ba6de59d2078dcaee5c381a71c2047bc18782a442c6c9ed83fcea3cb3f00f7a99ddf3092785fd7d7d8b70ee1009a717845074d354ebecac484442dae06

Download Submit
C:\Users\Public\Videos\1639137659\1.rar

Filesize
2.5MB

MD5
d128554d9d70875725ad776d68de9d28

SHA1
1396e4eda078c8c6cb980d8508afe109537b09f0

SHA256
a4ff67d7b4cf8d8b653c5880a3eede800e1d8b446817ca46b765fc721500803f

SHA512
20fb0f33a753b2cf6f410a0dc3a4d5846c694bc8074836caae948ebec5671e71ed4e556847f635bfd9fa18300874f69947c2999a7cf523e5936a2906535c38b0

Download Submit
C:\Users\Public\Videos\1639137659\360.tct

Filesize
254KB

MD5
0d63452f6767d54ce5ee73f9cb1083c9

SHA1
484236ec2cb5eb1784fc05f9cd3f68d1e9b0a7e9

SHA256
57119d54b90eebd73bc62006e094f1961fb5a2f78ec63ae3bd00dfdbca5d995f

SHA512
8d0d22e7f7b2732c2247036a53d28a63468e9e339419cc196536d9d415acfa3c145d9483536e59fa2cbcdb36af93f65aa033f9c774f1d3cf50afc0025a00a2e5

Download Submit
C:\Users\Public\Videos\1639137659\7zz.exe

Filesize
572KB

MD5
f2ae502d448cfb81a5f40a9368d99b1a

SHA1
f849be86e9e7ced0acd51a68f92992b8090d08a5

SHA256
07ad4b984f288304003b080dd013784685181de4353a0b70a0247f96e535bd56

SHA512
9f3aea471684e22bf9fc045ca0e47a8429fa0b13c188f9c7a51937efa8afcec976761b0c4c95aed7735096fcc2278bbd86b0ab581261a6aff6c694d7bb65e9be

Download Submit
C:\Users\Public\Videos\1639137659\ojbkcg.exe

Filesize
95KB

MD5
e9e913a0fa0eb4365bb415a5cf5b804a

SHA1
84f0f152dd2937c99fddc37ac54c245a4777b964

SHA256
4a54964ba3294d426cd78f82be0e2cf57fbeff0686ab85c47eb49a3d0837dcee

SHA512
60458398dbc293baffb34d866e185fb3a7950304f6fb155969a0f05d8510a4c078b150f72b172a6b303278e54400f2d30e28697319ab72c5f8782cde5083e297

Download Submit
C:\Users\Public\Videos\1639137659\ojbkcg.exe

Filesize
95KB

MD5
e9e913a0fa0eb4365bb415a5cf5b804a

SHA1
84f0f152dd2937c99fddc37ac54c245a4777b964

SHA256
4a54964ba3294d426cd78f82be0e2cf57fbeff0686ab85c47eb49a3d0837dcee

SHA512
60458398dbc293baffb34d866e185fb3a7950304f6fb155969a0f05d8510a4c078b150f72b172a6b303278e54400f2d30e28697319ab72c5f8782cde5083e297

Download Submit
C:\Users\Public\Videos\1639137659\rundll3222.exe

Filesize
45KB

MD5
c36bb659f08f046b139c8d1b980bf1ac

SHA1
dd3247b225a8da3161f76055f31cbc5f64a66086

SHA256
405f03534be8b45185695f68deb47d4daf04dcd6df9d351ca6831d3721b1efc4

SHA512
3eeae6a3b424fa1709b4443f625ee99fa2d2861661214b868d36bf5a63c0aaac61ad3bdd9c4b18cb9d820ef89653787df812289d31d65415c4dd08fd45d0c73f

Download Submit
C:\Users\Public\Videos\1639137659\svchost.txt

Filesize
8.5MB

MD5
5ecefaea48c5a8498b036acd8ce411a5

SHA1
501b3ed0fb6c33f6a122d603292d7fe04e8ce04f

SHA256
88dd42dedc77e8ad117cc54d7b37083bbacaa6ecb84553bda31905b0a29e0e4d

SHA512
e41a6bb1c734330dac37b9e7552053efdb46d15bf60601613baf8b5ab4be352c4d2f2d1c4e8bc4fe1616b98adfcf7b26336300b3bb724a9016e04d5820b2dd00

Download Submit
\ProgramData\7z.dll

Filesize
1.1MB

MD5
6a9e619a0392bb5918306f7fbaa8c85b

SHA1
d18d392e078e703ef7d9ec2a4f2042d7fbbf3863

SHA256
3beecf3d764daaffc020ba89dd764b0215fbd360bfc115fbb3880ef0672b98e5

SHA512
565c8f27395c41d4778debd0dec63d6fafb703255093d6ad5aea5d8b26f768f8b7ff7b2fa37a710179d3c1c0c0f47075a471c73584eb8941ee38b9ea25dcf809

Download Submit
\Users\Public\Videos\1639137659\360.tct

Filesize
254KB

MD5
0d63452f6767d54ce5ee73f9cb1083c9

SHA1
484236ec2cb5eb1784fc05f9cd3f68d1e9b0a7e9

SHA256
57119d54b90eebd73bc62006e094f1961fb5a2f78ec63ae3bd00dfdbca5d995f

SHA512
8d0d22e7f7b2732c2247036a53d28a63468e9e339419cc196536d9d415acfa3c145d9483536e59fa2cbcdb36af93f65aa033f9c774f1d3cf50afc0025a00a2e5

Download Submit
memory/728-193-0x00000228A3650000-0x00000228A3EC5000-memory.dmp

Filesize
8.5MB

Download
memory/728-188-0x0000000180000000-0x00000001808AB000-memory.dmp

Filesize
8.7MB

Download