10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3

General

Target

10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
Size

102KB
MD5

1fee2a8c022416cf800a9b48ce879f7b
SHA1

3dc5f2f5edaf694bdf5fe5dec96b51b2f26609f1
SHA256

10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3
SHA512

9a835e1fb1bce45cd4f7d465cebc335430aa16c06bccd9b4300a67f384863be2b6353fef5d52bf3fdf0e69466b679821fb37fa47f48af57b47780c165d74d1eb
SSDEEP

1536:lDcfLfIb5EpvuzgyXVdtnfHNWnnn6maaaBrrrmQOvvvM:lD2LTZuzgyXVd1veaaaz

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000d00000000e655-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/784-5-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2140-6-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/784-7-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3016	attrib.exe

Deletes itself 1 IoCs

pid	Process
1364	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
784	zskhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\zskhost.exe	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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	zskhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	zskhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 3016	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	28
PID 2140 wrote to memory of 3016	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	28
PID 2140 wrote to memory of 3016	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	28
PID 2140 wrote to memory of 3016	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	28
PID 2140 wrote to memory of 1364	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	31
PID 2140 wrote to memory of 1364	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	31
PID 2140 wrote to memory of 1364	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	31
PID 2140 wrote to memory of 1364	2140	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
"C:\Users\Admin\AppData\Local\Temp\10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\zskhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:3016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\10DFD1~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1364

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:784

Network

DNS

www.baidu.com

zskhost.exe

Remote address:

8.8.8.8:53

Request

www.baidu.com

IN A

Response

www.baidu.com

IN CNAME

www.a.shifen.com

www.a.shifen.com

IN CNAME

www.wshifen.com

www.wshifen.com

IN A

103.235.46.40
DNS

zskhost.exe

Remote address:

103.235.46.40:80

Response

HTTP/1.1 400 Bad Request
DNS

kZnDzdedlU.nnnn.eu.org

zskhost.exe

Remote address:

8.8.8.8:53

Request

kZnDzdedlU.nnnn.eu.org

IN A

Response
DNS

kZnDzdedlU.nnnn.eu.org

zskhost.exe

Remote address:

8.8.8.8:53

Request

kZnDzdedlU.nnnn.eu.org

IN A
DNS

kZnDzdedlU.nnnn.eu.org

zskhost.exe

Remote address:

8.8.8.8:53

Request

kZnDzdedlU.nnnn.eu.org

IN A
DNS

RyFbTHXKcO.nnnn.eu.org

zskhost.exe

Remote address:

8.8.8.8:53

Request

RyFbTHXKcO.nnnn.eu.org

IN A

Response
DNS

1eQmEl0wqc.nnnn.eu.org

zskhost.exe

Remote address:

8.8.8.8:53

Request

1eQmEl0wqc.nnnn.eu.org

IN A

Response

103.235.46.40:80

www.baidu.com

http

zskhost.exe

772 B
428 B
10
9

HTTP Response

400

8.8.8.8:53

www.baidu.com

dns

zskhost.exe

59 B
128 B
1
1

DNS Request

www.baidu.com

DNS Response

103.235.46.40
8.8.8.8:53

kZnDzdedlU.nnnn.eu.org

dns

zskhost.exe

204 B
118 B
3
1

DNS Request

kZnDzdedlU.nnnn.eu.org

DNS Request

kZnDzdedlU.nnnn.eu.org

DNS Request

kZnDzdedlU.nnnn.eu.org
8.8.8.8:53

RyFbTHXKcO.nnnn.eu.org

dns

zskhost.exe

68 B
118 B
1
1

DNS Request

RyFbTHXKcO.nnnn.eu.org
8.8.8.8:53

1eQmEl0wqc.nnnn.eu.org

dns

zskhost.exe

68 B
118 B
1
1

DNS Request

1eQmEl0wqc.nnnn.eu.org

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\zskhost.exe

Filesize
102KB

MD5
700c431a7dbf7a6c506528c395992813

SHA1
f13d09985a4d0623c70b051b642579aa9bdfc2a4

SHA256
aa9cec686617af48b0cfc09d2c956e1fb7c773976b5bb805e438575039505773

SHA512
79e49fcfb2c095bbd49be2cd6b8df5a12d4de2fa64de8bfb21d9684d75771f65d5706fa7baaacd0d95c4e49c4af35b4f291824232afcb862d59aa7e04afd899c

Download Submit
memory/784-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/784-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2140-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2140-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Enterprise v15

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Downloads

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