gh0strat | 81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94

Analysis

max time kernel
149s
max time network
152s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
08/09/2022, 20:15

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General

Target

81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe
Size

375KB
MD5

0fcb53897801a8a51fc3e14c70c7ec8e
SHA1

62b750e2989489abc2ab11778587803a54e7dc2f
SHA256

81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94
SHA512

0a0f92234f69dcf55f598e17991851b146fe8f0dad8bfe66ec10afbc7000e8a8ec1a5c8fe1a0e7b93d493ecfb770ac79cad5b97d4fba90c0cf2cbea3f7dae159
SSDEEP

6144:Iv5zQJVb5p72cHF1ybDFwekh212KhvwIb759QOaBjpaVRPu23E2rJmWjFc94:I4VOiF1WD7kE1dTYOi8V5u23zmWFy4

Score

10^/10

gh0strat rat upx

Malware Config

Signatures

Gh0st RAT payload 9 IoCs

resource	yara_rule
behavioral1/memory/2248-173-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/2248-172-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/2248-175-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4160-243-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4160-273-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4228-300-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/3132-358-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4228-370-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/3132-372-0x0000000010000000-0x0000000010362000-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 3 IoCs

pid	Process
4160	SQLSerasi.exe
4228	SQLSerasi.exe
3132	SQLSerasi.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2248-168-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/2248-173-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/2248-172-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/2248-175-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4160-243-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4160-273-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4228-300-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/3132-358-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4228-370-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/3132-372-0x0000000010000000-0x0000000010362000-memory.dmp	upx

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	SQLSerasi.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe
File opened for modification	C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.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 5 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	SQLSerasi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	SQLSerasi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	SQLSerasi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	SQLSerasi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\2	SQLSerasi.exe

Modifies data under HKEY_USERS 8 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	SQLSerasi.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	SQLSerasi.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	SQLSerasi.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	SQLSerasi.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	SQLSerasi.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe
Token: SeDebugPrivilege	4160	SQLSerasi.exe
Token: SeDebugPrivilege	4228	SQLSerasi.exe
Token: SeDebugPrivilege	4228	SQLSerasi.exe
Token: SeDebugPrivilege	3132	SQLSerasi.exe
Token: SeDebugPrivilege	3132	SQLSerasi.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 4160	2248	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe	66
PID 2248 wrote to memory of 4160	2248	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe	66
PID 2248 wrote to memory of 4160	2248	81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe	66
PID 4228 wrote to memory of 3132	4228	SQLSerasi.exe	68
PID 4228 wrote to memory of 3132	4228	SQLSerasi.exe	68
PID 4228 wrote to memory of 3132	4228	SQLSerasi.exe	68

C:\Users\Admin\AppData\Local\Temp\81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe
"C:\Users\Admin\AppData\Local\Temp\81912a41074f384b52c2f10f692414fc7ba2c6aa3806cef860b839e92967ba94.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
  "C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4160

C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
"C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
  "C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:3132

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:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
6b6cd44dc178561d65e15fde384d4e09

SHA1
987bb2ba9a58dbb466bb0c91c179174c48a4c480

SHA256
93024228d60b35c778b167c4d4d2e550c74ceb62cf64a7376bb3d70fd237a9a8

SHA512
9270da96f5c92e716bc5b7732fae9fff64905592bd21ce5eca371c40ffecefce53dc7ed5729d609ccd9c1a1bb5dc451eca8997555131a2a221d78af17abea37d

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
6b6cd44dc178561d65e15fde384d4e09

SHA1
987bb2ba9a58dbb466bb0c91c179174c48a4c480

SHA256
93024228d60b35c778b167c4d4d2e550c74ceb62cf64a7376bb3d70fd237a9a8

SHA512
9270da96f5c92e716bc5b7732fae9fff64905592bd21ce5eca371c40ffecefce53dc7ed5729d609ccd9c1a1bb5dc451eca8997555131a2a221d78af17abea37d

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
6b6cd44dc178561d65e15fde384d4e09

SHA1
987bb2ba9a58dbb466bb0c91c179174c48a4c480

SHA256
93024228d60b35c778b167c4d4d2e550c74ceb62cf64a7376bb3d70fd237a9a8

SHA512
9270da96f5c92e716bc5b7732fae9fff64905592bd21ce5eca371c40ffecefce53dc7ed5729d609ccd9c1a1bb5dc451eca8997555131a2a221d78af17abea37d

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
6b6cd44dc178561d65e15fde384d4e09

SHA1
987bb2ba9a58dbb466bb0c91c179174c48a4c480

SHA256
93024228d60b35c778b167c4d4d2e550c74ceb62cf64a7376bb3d70fd237a9a8

SHA512
9270da96f5c92e716bc5b7732fae9fff64905592bd21ce5eca371c40ffecefce53dc7ed5729d609ccd9c1a1bb5dc451eca8997555131a2a221d78af17abea37d

Download Submit
memory/2248-155-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-166-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-121-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-122-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-123-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-124-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-125-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-126-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-128-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-129-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-127-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2248-130-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-119-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-132-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-133-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-134-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-136-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-137-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-138-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-135-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-139-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-140-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-141-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-142-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-143-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-144-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-145-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-146-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-147-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-148-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-149-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-150-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-151-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-152-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-153-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-154-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-131-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-120-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-172-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2248-158-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-159-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-160-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-161-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-162-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-163-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-164-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-165-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-156-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-168-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2248-167-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-171-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-173-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2248-157-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-174-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-176-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-175-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2248-177-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-178-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-179-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-180-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-181-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-182-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-183-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/2248-190-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2248-118-0x00000000779B0000-0x0000000077B3E000-memory.dmp

Filesize
1.6MB

Download
memory/3132-358-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/3132-371-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3132-372-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4160-243-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4160-273-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4160-302-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4228-300-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4228-369-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4228-370-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download