gh0strat | 89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 01:34

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General

Target

89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
Size

272KB
MD5

65541ea7390ffa6f04aee7b4ff992edc
SHA1

17c833d5654223796facaacf3dc4ddcd8f023548
SHA256

89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf
SHA512

ce22cb824100a69a14cc6446f2bddc08d58d535ae01d6b8622fc78ef50db243ec1f88cd208ad8ae055278993e5e98b189930f0f31348cac020acfab4a0408f10
SSDEEP

6144:VogecmWtyoRgCHsM8/aMOf9hb4GsoozQ9bVxZaQE:+gecmCyYgC58/grxkgxQ

Score

10^/10

gh0strat bootkit persistence rat

Malware Config

Signatures

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/memory/988-55-0x0000000000400000-0x0000000000482000-memory.dmp	family_gh0strat
behavioral1/files/0x0007000000014864-62.dat	family_gh0strat
behavioral1/files/0x0007000000014864-63.dat	family_gh0strat
behavioral1/memory/888-64-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/988-84-0x0000000000400000-0x0000000000482000-memory.dmp	family_gh0strat
behavioral1/memory/888-88-0x0000000020000000-0x0000000020027000-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

Executes dropped EXE 2 IoCs

pid	Process
888	ctfn0m.ini
824	ctvukm.exe

Deletes itself 1 IoCs

pid	Process
624	cmd.exe

Loads dropped DLL 6 IoCs

pid	Process
988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
888	ctfn0m.ini
988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
824	ctvukm.exe
824	ctvukm.exe
824	ctvukm.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	ctfn0m.ini

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\ctfn0m.bat	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
File created	C:\Program Files\bpwophq\hhwwdpgo.vuk	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
File opened for modification	C:\Program Files\Common Files\safesa.jpg	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
File created	C:\Program Files\Common Files\safesa.jpg	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
File created	C:\Program Files\Common Files\ctfn0m.ini	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
File opened for modification	C:\Program Files\Common Files\ctfn0m.ini	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1872	sc.exe
1108	sc.exe

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	ctfn0m.ini
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ctfn0m.ini

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
888	ctfn0m.ini
888	ctfn0m.ini
888	ctfn0m.ini

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 888	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	27
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1872	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	28
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 1108	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	29
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 988 wrote to memory of 824	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	32
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 824 wrote to memory of 1516	824	ctvukm.exe	33
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36
PID 988 wrote to memory of 624	988	89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe	36

C:\Users\Admin\AppData\Local\Temp\89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe
"C:\Users\Admin\AppData\Local\Temp\89e34b63d109a1853831174df738766012df2a48f3eff58ad71fb6e421bcdecf.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:988
- C:\Program Files\Common Files\ctfn0m.ini
  "C:\Program Files\Common Files\ctfn0m.ini" "C:\Program Files\bpwophq\hhwwdpgo.vuk" ServiceMain
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:888
- C:\Windows\SysWOW64\sc.exe
  sc config RasAuto start= auto
  2⤵
  - Launches sc.exe
  PID:1872
- C:\Windows\SysWOW64\sc.exe
  sc config RasAuto start= auto
  2⤵
  - Launches sc.exe
  PID:1108
- C:\Documents and Settings\ctvukm.exe
  "C:\Documents and Settings\ctvukm.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del C:\DOCUME~1\ctvukm.exe
    3⤵
    PID:1516
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del C:\Users\Admin\AppData\Local\Temp\89E34B~1.EXE
  2⤵
  - Deletes itself
  PID:624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

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:\Documents and Settings\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
C:\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Program Files\bpwophq\hhwwdpgo.vuk

Filesize
24.1MB

MD5
3f14c04accf6c5ed1d1e42decf1a07a3

SHA1
eb7c40ce9984305bceffbfead3acc4a0ccb3b186

SHA256
77548660bebc11f8a90d29d30b80bac312215bd96ab231d1a4a361d3cb23d6d7

SHA512
802dbac11e9c2de424a19ce14ec4ed62c075109395c4b1a06eaa6280de9d1acfda523b6dbc2f93bb330b009cddb4ca03b1ac13d72e0b940b0e7fcaeec814a9f4

Download Submit
C:\Users\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Program Files\bpwophq\hhwwdpgo.vuk

Filesize
24.1MB

MD5
3f14c04accf6c5ed1d1e42decf1a07a3

SHA1
eb7c40ce9984305bceffbfead3acc4a0ccb3b186

SHA256
77548660bebc11f8a90d29d30b80bac312215bd96ab231d1a4a361d3cb23d6d7

SHA512
802dbac11e9c2de424a19ce14ec4ed62c075109395c4b1a06eaa6280de9d1acfda523b6dbc2f93bb330b009cddb4ca03b1ac13d72e0b940b0e7fcaeec814a9f4

Download Submit
\Users\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
\Users\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
\Users\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
\Users\ctvukm.exe

Filesize
24.0MB

MD5
8533159bac77132fef2144bb739a2b40

SHA1
b9b353b815f0816905fa8788866b7bb06b1537b3

SHA256
6e52bc8e89b1d98bfb03e279516f1b875777739bca80b1065ea73e46e65b11b4

SHA512
923b8545f8153baae237ba2ae4073dacd2a07dfd9f95a1556b6dd5ee3024923570c18378e817aa9cb915a7a24578c0de1f88166e4d2a47174624140ee2eb3800

Download Submit
memory/824-82-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/824-80-0x0000000000020000-0x0000000000028000-memory.dmp

Filesize
32KB

Download
memory/824-73-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/824-79-0x0000000000020000-0x0000000000028000-memory.dmp

Filesize
32KB

Download
memory/888-64-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/888-88-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/988-56-0x0000000000240000-0x00000000002C2000-memory.dmp

Filesize
520KB

Download
memory/988-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/988-85-0x0000000000240000-0x000000000024D000-memory.dmp

Filesize
52KB

Download
memory/988-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/988-72-0x00000000002C0000-0x00000000002C8000-memory.dmp

Filesize
32KB

Download
memory/988-54-0x0000000075021000-0x0000000075023000-memory.dmp

Filesize
8KB

Download