gh0strat | 8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825

General

Target

8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe
Size

539KB
MD5

f2d86e6703e7706174e887936571d7d4
SHA1

1f2377bd479e7fe584cbab253b29b37d4f767b36
SHA256

8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825
SHA512

9d7bdf72a52c4041469c9380d9a7d8c29d21a05e64710547c2d542991a1356a7c10cc4a429d753e772b571fb884b5687b70b3eb94ee7ceb403df30f13f73341e
SSDEEP

12288:NhymnwJFPNdgBAEHApqePJN1AmLM7uVq9sSAL:NUmwrl2Ao7sJNlM7ymsSA

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4312-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1600-12-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1600-23-0x0000000000400000-0x0000000000547000-memory.dmp	purplefox_rootkit
behavioral2/memory/2440-20-0x0000000000400000-0x0000000000547000-memory.dmp	purplefox_rootkit
behavioral2/memory/4312-19-0x0000000000400000-0x0000000000547000-memory.dmp	purplefox_rootkit
behavioral2/memory/2440-37-0x0000000000400000-0x0000000000547000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/4312-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1600-11-0x0000000000400000-0x0000000000547000-memory.dmp	family_gh0strat
behavioral2/memory/1600-12-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1600-23-0x0000000000400000-0x0000000000547000-memory.dmp	family_gh0strat
behavioral2/memory/2440-20-0x0000000000400000-0x0000000000547000-memory.dmp	family_gh0strat
behavioral2/memory/4312-19-0x0000000000400000-0x0000000000547000-memory.dmp	family_gh0strat
behavioral2/memory/2440-37-0x0000000000400000-0x0000000000547000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	Wxypq.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Wxypq.exe

Executes dropped EXE 2 IoCs

pid	Process
1600	Wxypq.exe
2440	Wxypq.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4312-0-0x0000000000400000-0x0000000000547000-memory.dmp	upx
behavioral2/memory/1600-11-0x0000000000400000-0x0000000000547000-memory.dmp	upx
behavioral2/files/0x0008000000023208-10.dat	upx
behavioral2/files/0x0008000000023208-9.dat	upx
behavioral2/files/0x0008000000023208-18.dat	upx
behavioral2/memory/1600-23-0x0000000000400000-0x0000000000547000-memory.dmp	upx
behavioral2/memory/2440-20-0x0000000000400000-0x0000000000547000-memory.dmp	upx
behavioral2/memory/4312-19-0x0000000000400000-0x0000000000547000-memory.dmp	upx
behavioral2/memory/2440-37-0x0000000000400000-0x0000000000547000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\AppPatch\Wxypq.exe	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe
File created	C:\Program Files (x86)\AppPatch\Wxypq.exe	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Wxypq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Wxypq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Wxypq.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
920	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2440	Wxypq.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4312	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe
Token: SeLoadDriverPrivilege	2440	Wxypq.exe
Token: 33	2440	Wxypq.exe
Token: SeIncBasePriorityPrivilege	2440	Wxypq.exe
Token: 33	2440	Wxypq.exe
Token: SeIncBasePriorityPrivilege	2440	Wxypq.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4312 wrote to memory of 1236	4312	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe	88
PID 4312 wrote to memory of 1236	4312	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe	88
PID 4312 wrote to memory of 1236	4312	8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe	88
PID 1600 wrote to memory of 2440	1600	Wxypq.exe	89
PID 1600 wrote to memory of 2440	1600	Wxypq.exe	89
PID 1600 wrote to memory of 2440	1600	Wxypq.exe	89
PID 1236 wrote to memory of 920	1236	cmd.exe	92
PID 1236 wrote to memory of 920	1236	cmd.exe	92
PID 1236 wrote to memory of 920	1236	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe
"C:\Users\Admin\AppData\Local\Temp\8c385106f2acdb5958abc3b808e540d162fe9c8f4a7d3c35f2f03bdde5c52825.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4312
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\8C3851~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1236
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:920

C:\Program Files (x86)\AppPatch\Wxypq.exe
"C:\Program Files (x86)\AppPatch\Wxypq.exe" -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Program Files (x86)\AppPatch\Wxypq.exe
  "C:\Program Files (x86)\AppPatch\Wxypq.exe" -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:2440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\AppPatch\Wxypq.exe

Filesize
135KB

MD5
9a4a53d57280dc0326ab984ea1f76dfe

SHA1
48f931a922b0925542985c7e3148707eb60c3663

SHA256
9233356e68091b391c3f4b7ff279242ef2cf00afe670f97ad0f2e2d39e348267

SHA512
9c2ee4ee9fe842c70f6b975d294a64a7a845771acad969ffe260855b888520176dd7dfba224f122d1c61916f74826b5c34e8cc75070b603e53c206cbb261e594

Download Submit
C:\Program Files (x86)\AppPatch\Wxypq.exe

Filesize
62KB

MD5
ad650fe8374001cc958df041bd4aa174

SHA1
3279fe9bfa6ae09c07da943a12e8615550a3b95f

SHA256
9cc7914e2071697c14fd34b9acf1df3ea09099c8ab6428b65b83b08abed0d027

SHA512
eb7a2893a815a763b178ae9d638483e5e1774cc167966536795e6ed5c17bc89ed172dfd8c288aefd46fd7b1a0b3eac8d8a39c518fafb6a99edeaf8b2f57ffa6a

Download Submit
C:\Program Files (x86)\AppPatch\Wxypq.exe

Filesize
196KB

MD5
470406165bb0aa92d11f3985142ca90d

SHA1
ebbecf694fb7e15ef86a110ef7c324fe843710e7

SHA256
c9a4abe535de62ca877e4a8374a61de3a435cc57273ed7ef181ca0e1535f1e28

SHA512
101e48340a736670a089b32b13e5ec8ce007bb3d8f773b1667102d468039ea003151dbfcd1741525f3be4fecb37a01e119d4fbdea069c5d4ce526d55f6d98eb4

Download Submit
memory/1600-11-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/1600-12-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1600-23-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/2440-20-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/2440-37-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/4312-0-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/4312-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4312-19-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads