ec19333b5f6e7c2768074af6f34239f59ddba604275a413418168016c85ca0a1

General

Target

46f0a706173f256cbe158d9ea7a3f510N.exe
Size

75KB
MD5

46f0a706173f256cbe158d9ea7a3f510
SHA1

33e59d81596646f1d4faa4ce660579041bcc2244
SHA256

ec19333b5f6e7c2768074af6f34239f59ddba604275a413418168016c85ca0a1
SHA512

0429340182ccafd613d257b37768e287507721d6f83398a8766f35abe6b04992897c038cdc56d00820d0e354bb14ee32c506357ebaa0a3b9bfa7a2f84bd06b9c
SSDEEP

1536:8AAbhIP83LNnouy88zJHNWnnn3CCCCrrDRNxUUUmBDdddd4:87hEUL1out8zdID1K

Score

8^/10

evasion upx

Malware Config

Signatures

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
2540	attrib.exe

Deletes itself 1 IoCs

pid	Process
2052	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	jaohost.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1908-0-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/files/0x00090000000120fa-4.dat	upx
behavioral1/memory/2580-5-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/1908-7-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/2580-8-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/2580-14-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/2580-17-0x0000000000400000-0x0000000000415000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\jaohost.exe	46f0a706173f256cbe158d9ea7a3f510N.exe
File opened for modification	C:\Windows\Debug\jaohost.exe	46f0a706173f256cbe158d9ea7a3f510N.exe
File opened for modification	C:\Windows\Debug\jaohost.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	jaohost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	jaohost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1908	46f0a706173f256cbe158d9ea7a3f510N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2540	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	30
PID 1908 wrote to memory of 2540	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	30
PID 1908 wrote to memory of 2540	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	30
PID 1908 wrote to memory of 2540	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	30
PID 1908 wrote to memory of 2052	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	33
PID 1908 wrote to memory of 2052	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	33
PID 1908 wrote to memory of 2052	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	33
PID 1908 wrote to memory of 2052	1908	46f0a706173f256cbe158d9ea7a3f510N.exe	33

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2540	attrib.exe

C:\Users\Admin\AppData\Local\Temp\46f0a706173f256cbe158d9ea7a3f510N.exe
"C:\Users\Admin\AppData\Local\Temp\46f0a706173f256cbe158d9ea7a3f510N.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\jaohost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\46F0A7~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2052

C:\Windows\Debug\jaohost.exe
C:\Windows\Debug\jaohost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2580

Network

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\jaohost.exe

Filesize
75KB

MD5
8fb29e5b7257bea1fd3bbbe47bf4bea0

SHA1
38bbdc49c2eeb0185300f5bf5dd77326d6c9597c

SHA256
a925d45338afa7e45b3bb2c57d96e4b335ad83a3f398efd170e20e13a1c01515

SHA512
f70656df3f74f8703dba1e17aedb3a98ba60377a4f9f4bab3768b9493dfef753a3b0baf9f46e7a93ae724dc56f621d43ea78884039dd24f70d6ad26e150e5adf

Download Submit
memory/1908-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1908-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2580-5-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2580-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2580-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2580-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads