7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6

General

Target

7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe
Size

35KB
MD5

dc35da9cea24ed64ab407e2e7df57ccf
SHA1

0b862b8f198cd974dd5068132cbc0204c102a645
SHA256

7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6
SHA512

58cbf0acec3fb6f2fc9e9dba8287bc306cc002a0910fe8c3cb031a0589aaaacb2e43607bf757e54d265bc8e089c0c4a727c9c2eeccffafe5837917496516c165
SSDEEP

768:M3EVdV0YXY/nckNsWheCNSdd57Do5utsp1TOIIIwjkWVVVO:lVdm5/nprh3Ny57guSTOjfVVVO

Score

9^/10

evasion upx

Malware Config

Signatures

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

Processes:

resource	yara_rule
behavioral1/memory/1296-6-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3024-7-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3024-13-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3024-16-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3024-19-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1296-0-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
C:\Windows\Debug\zskhost.exe	UPX
behavioral1/memory/3024-5-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral1/memory/1296-6-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral1/memory/3024-7-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral1/memory/3024-13-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral1/memory/3024-16-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral1/memory/3024-19-0x0000000000400000-0x0000000000417000-memory.dmp	UPX

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

Processes:

attrib.exe

pid process

1276 attrib.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2640 cmd.exe
Executes dropped EXE 1 IoCs

Processes:

zskhost.exe

pid process

3024 zskhost.exe

pid	process
1276	attrib.exe

pid	process
2640	cmd.exe

pid	process
3024	zskhost.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1296-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx
C:\Windows\Debug\zskhost.exe	upx
behavioral1/memory/3024-5-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/1296-6-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/3024-7-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/3024-13-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/3024-16-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/3024-19-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

Processes:

7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exeattrib.exe

description	ioc	process
File created	C:\Windows\Debug\zskhost.exe	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.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

Processes:

zskhost.exe

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe

description pid process

Token: SeIncBasePriorityPrivilege 1296 7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe

description	pid	process	target process
PID 1296 wrote to memory of 1276	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	attrib.exe
PID 1296 wrote to memory of 1276	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	attrib.exe
PID 1296 wrote to memory of 1276	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	attrib.exe
PID 1296 wrote to memory of 1276	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	attrib.exe
PID 1296 wrote to memory of 2640	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	cmd.exe
PID 1296 wrote to memory of 2640	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	cmd.exe
PID 1296 wrote to memory of 2640	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	cmd.exe
PID 1296 wrote to memory of 2640	1296	7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe	cmd.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

1276 attrib.exe

pid	process
1276	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe
"C:\Users\Admin\AppData\Local\Temp\7aee28227690ff9dcafdcf2461749d472e06c72fa55304dec655b1bb0a170ff6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1296

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:1276

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7AEE28~1.EXE > nul
2⤵
- Deletes itself
PID:2640

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3024

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\Debug\zskhost.exe
Filesize
35KB

MD5
c27f2a5ece068c50c497d3f3a8e5b3e3

SHA1
277c2adcadb15c09915cf559685e6da53ccb8fae

SHA256
37a40e294edbbca9723dec306433ab0d42ea5cd4f590a74b05b8717da68d2734

SHA512
ea39ba9923e9fb5a5e1cf8890792f92b4cc6db85e5d55265f164e5e8a78670c15b764cc5b5d6cd69bbd4a7bd565a152b077a1147f54fbb3fa9f996d5bd68158f

Download Submit
memory/1296-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1296-6-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-5-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-7-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-13-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads