da0fe98ee2da7e9c071aba8565fe4cb915a45cdaf27dffdcf1f604db8fa5e85c

General

Target

026bddb8a2649f9a296d58fa64958130N.exe
Size

38KB
MD5

026bddb8a2649f9a296d58fa64958130
SHA1

72a05ce5a022fd36c367b295d4cc60c532037bde
SHA256

da0fe98ee2da7e9c071aba8565fe4cb915a45cdaf27dffdcf1f604db8fa5e85c
SHA512

e62a80a9cade95eb05d8a57500102e2ac7cb8bfd128d93df6793506f181881323dff38ba1e20a76cc145ba9942454f2a26d372248c73c38c10d5bbe4bdca4044
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cOf:NWQa2TLEmITcoQxfllfmS1cOf

Score

8^/10

discovery evasion execution upx

Malware Config

Signatures

Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
2384	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
2436	026bddb8a2649f9a296d58fa64958130N.exe
2436	026bddb8a2649f9a296d58fa64958130N.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2436-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x00080000000173b2-4.dat	upx
behavioral1/memory/2384-17-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2436-19-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	026bddb8a2649f9a296d58fa64958130N.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe

Launches sc.exe 2 IoCs

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

pid	Process
2276	sc.exe
2092	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	026bddb8a2649f9a296d58fa64958130N.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2436	026bddb8a2649f9a296d58fa64958130N.exe
2384	smss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2276	2436	026bddb8a2649f9a296d58fa64958130N.exe	30
PID 2436 wrote to memory of 2276	2436	026bddb8a2649f9a296d58fa64958130N.exe	30
PID 2436 wrote to memory of 2276	2436	026bddb8a2649f9a296d58fa64958130N.exe	30
PID 2436 wrote to memory of 2276	2436	026bddb8a2649f9a296d58fa64958130N.exe	30
PID 2436 wrote to memory of 2384	2436	026bddb8a2649f9a296d58fa64958130N.exe	32
PID 2436 wrote to memory of 2384	2436	026bddb8a2649f9a296d58fa64958130N.exe	32
PID 2436 wrote to memory of 2384	2436	026bddb8a2649f9a296d58fa64958130N.exe	32
PID 2436 wrote to memory of 2384	2436	026bddb8a2649f9a296d58fa64958130N.exe	32
PID 2384 wrote to memory of 2092	2384	smss.exe	33
PID 2384 wrote to memory of 2092	2384	smss.exe	33
PID 2384 wrote to memory of 2092	2384	smss.exe	33
PID 2384 wrote to memory of 2092	2384	smss.exe	33

C:\Users\Admin\AppData\Local\Temp\026bddb8a2649f9a296d58fa64958130N.exe
"C:\Users\Admin\AppData\Local\Temp\026bddb8a2649f9a296d58fa64958130N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- C:\Windows\SysWOW64\1230\smss.exe
  C:\Windows\system32\1230\smss.exe -d
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1

T1489

Replay Monitor

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Downloads

\Windows\SysWOW64\1230\smss.exe

Filesize
38KB

MD5
ab313cdf52a4b6d3dba3d624fe3ac51c

SHA1
05af7e6b32465cb3a08669582fce988783c0d34a

SHA256
9a3b136438ce5005a25a190bba7a3e4a76f665f86effc60ff29d81fded2943dc

SHA512
537947df71db66a2078e6976328c994715edad66a3a57ea21cde12529bef0f53249c758fc135ff816155ddd0943ea25fd60a650e142253a22a922b0f5318b9c3

Download Submit
memory/2384-17-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2436-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2436-10-0x0000000000370000-0x0000000000392000-memory.dmp

Filesize
136KB

Download
memory/2436-19-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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