gh0strat | bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff

Analysis

max time kernel
143s
max time network
172s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
12-02-2023 19:42

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General

Target

bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe
Size

72KB
MD5

96ef8afa042404331636def662c83a9e
SHA1

578bc3973848495df63015d2b4d4ec9156ae2776
SHA256

bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff
SHA512

c2db17a51c007acbf8c033177862a5d08e0e0e5001810c1ac4ebecb7c7124f515247453ee4188d6ded9ac71be5313eb87aaa72a7c663789777caf79bcf1468b0
SSDEEP

384:nkNX5/j1/XiLSajU+322qiWspNdRA1E/VuXP3QAZx31zTm31CuU/S0Q+duWx/3:kNpJ/X8jU+mNwOKVMgAZxlEU/Sg3

Score

10^/10

gh0strat purplefox rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/316-69-0x0000000010000000-0x0000000010191000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/316-69-0x0000000010000000-0x0000000010191000-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
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
992	test.exe
316	2.exe

Loads dropped DLL 3 IoCs

pid	Process
1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe
1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe
1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012750-55.dat	upx
behavioral1/files/0x0007000000012750-57.dat	upx
behavioral1/memory/992-65-0x0000000000890000-0x00000000008D0000-memory.dmp	upx

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

description	ioc	Process
File opened (read-only)	\??\S:	2.exe
File opened (read-only)	\??\U:	2.exe
File opened (read-only)	\??\V:	2.exe
File opened (read-only)	\??\B:	2.exe
File opened (read-only)	\??\E:	2.exe
File opened (read-only)	\??\G:	2.exe
File opened (read-only)	\??\H:	2.exe
File opened (read-only)	\??\M:	2.exe
File opened (read-only)	\??\Z:	2.exe
File opened (read-only)	\??\T:	2.exe
File opened (read-only)	\??\W:	2.exe
File opened (read-only)	\??\F:	2.exe
File opened (read-only)	\??\L:	2.exe
File opened (read-only)	\??\N:	2.exe
File opened (read-only)	\??\O:	2.exe
File opened (read-only)	\??\P:	2.exe
File opened (read-only)	\??\Q:	2.exe
File opened (read-only)	\??\I:	2.exe
File opened (read-only)	\??\J:	2.exe
File opened (read-only)	\??\K:	2.exe
File opened (read-only)	\??\R:	2.exe
File opened (read-only)	\??\X:	2.exe
File opened (read-only)	\??\Y:	2.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\gpedit.msc	mmc.exe
File opened for modification	C:\Windows\System32\GroupPolicy	mmc.exe
File opened for modification	C:\Windows\System32\GroupPolicy\gpt.ini	mmc.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	2.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Main	mmc.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe
992	test.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	736	mmc.exe
Token: SeIncBasePriorityPrivilege	736	mmc.exe
Token: 33	736	mmc.exe
Token: SeIncBasePriorityPrivilege	736	mmc.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe
316	2.exe
736	mmc.exe
736	mmc.exe
736	mmc.exe
736	mmc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 992	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	30
PID 1380 wrote to memory of 992	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	30
PID 1380 wrote to memory of 992	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	30
PID 1380 wrote to memory of 992	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	30
PID 1380 wrote to memory of 316	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	31
PID 1380 wrote to memory of 316	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	31
PID 1380 wrote to memory of 316	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	31
PID 1380 wrote to memory of 316	1380	bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe	31
PID 992 wrote to memory of 1808	992	test.exe	32
PID 992 wrote to memory of 1808	992	test.exe	32
PID 992 wrote to memory of 1808	992	test.exe	32
PID 992 wrote to memory of 1808	992	test.exe	32

C:\Users\Admin\AppData\Local\Temp\bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe
"C:\Users\Admin\AppData\Local\Temp\bb946145a3856aa548b4e17d1cf9a4450b81b4e83a832554aefd5747834fa3ff.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1380
- C:\ProgramData\homo\test.exe
  "C:\ProgramData\homo\test.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c start C:\ProgramData\114514
    3⤵
    PID:1808
- C:\ProgramData\homo\2.exe
  "C:\ProgramData\homo\2.exe"
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Checks processor information in registry
  - Suspicious use of SetWindowsHookEx
  PID:316

C:\Windows\system32\mmc.exe
"C:\Windows\system32\mmc.exe" "C:\Windows\System32\gpedit.msc"
1⤵
- Drops file in System32 directory
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:736

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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\homo\2.exe

Filesize
1.5MB

MD5
c81194d14d4845bf013497d335b0e4fa

SHA1
cecbee477d2642a957b0da6c2e176009192099db

SHA256
03d572848afa63c68b2e7152957b17f839a7dac681d74888a516e24a98fa6ca1

SHA512
7dc9668c7122e3fa2a1b66b270c8fb6dc35a4dd2bce1ce9c1440ac858950b1cbecc820343e035c4d2f88761a63d1ba9fdf1fcc090a42ea6e165c7e95b4b59d5e

Download Submit
C:\ProgramData\homo\test.exe

Filesize
103KB

MD5
fff506076c8b3e5a0947dacd74ab9c09

SHA1
596a13421230a19d8ba704466085cac455ad6004

SHA256
bd213f8096c5067ee562d087ee4c70f47a5d3f4f6eacd9e570ee7de91e4c58a7

SHA512
67c0a44022b16f20b6584a973d571b2780d0dd31dcfefc5cebea55d68c1690d5ffc6d5eef66f32000a073ca5a9b54e971a1f7a37b7d1502bfd5637c6939d133a

Download Submit
\ProgramData\homo\2.exe

Filesize
1.5MB

MD5
c81194d14d4845bf013497d335b0e4fa

SHA1
cecbee477d2642a957b0da6c2e176009192099db

SHA256
03d572848afa63c68b2e7152957b17f839a7dac681d74888a516e24a98fa6ca1

SHA512
7dc9668c7122e3fa2a1b66b270c8fb6dc35a4dd2bce1ce9c1440ac858950b1cbecc820343e035c4d2f88761a63d1ba9fdf1fcc090a42ea6e165c7e95b4b59d5e

Download Submit
\ProgramData\homo\2.exe

Filesize
1.5MB

MD5
c81194d14d4845bf013497d335b0e4fa

SHA1
cecbee477d2642a957b0da6c2e176009192099db

SHA256
03d572848afa63c68b2e7152957b17f839a7dac681d74888a516e24a98fa6ca1

SHA512
7dc9668c7122e3fa2a1b66b270c8fb6dc35a4dd2bce1ce9c1440ac858950b1cbecc820343e035c4d2f88761a63d1ba9fdf1fcc090a42ea6e165c7e95b4b59d5e

Download Submit
\ProgramData\homo\test.exe

Filesize
103KB

MD5
fff506076c8b3e5a0947dacd74ab9c09

SHA1
596a13421230a19d8ba704466085cac455ad6004

SHA256
bd213f8096c5067ee562d087ee4c70f47a5d3f4f6eacd9e570ee7de91e4c58a7

SHA512
67c0a44022b16f20b6584a973d571b2780d0dd31dcfefc5cebea55d68c1690d5ffc6d5eef66f32000a073ca5a9b54e971a1f7a37b7d1502bfd5637c6939d133a

Download Submit
memory/316-69-0x0000000010000000-0x0000000010191000-memory.dmp

Filesize
1.6MB

Download
memory/736-68-0x000007FEFB731000-0x000007FEFB733000-memory.dmp

Filesize
8KB

Download
memory/736-70-0x000007FEF5201000-0x000007FEF5203000-memory.dmp

Filesize
8KB

Download
memory/736-76-0x000007FEF4D11000-0x000007FEF4D13000-memory.dmp

Filesize
8KB

Download
memory/736-78-0x000007FEECCD0000-0x000007FEEDD66000-memory.dmp

Filesize
16.6MB

Download
memory/992-65-0x0000000000890000-0x00000000008D0000-memory.dmp

Filesize
256KB

Download
memory/1380-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/1808-67-0x00000000743C1000-0x00000000743C3000-memory.dmp

Filesize
8KB

Download