ce1a59ec54d8f878d390ba294fcd7c09485b4b34ca84e7fbd04684078e9bd151

General

Target

nun.jar
Size

49KB
MD5

1ec26b2e83ccbffc6a8552d92d99a0da
SHA1

0158ee62d67584fcf1fe3d9665325762fbb1ee6e
SHA256

f3980210a51b33547b4fec31f77458036247dfcd12baca421eedc6bd4761aecf
SHA512

43d04bb614e170d3eda83d1783dbc58148b863e0c98cb10293c7a31bcae92ebdf55ad1a583336fbd005390d6fca13370f7a64a8b4a266f0d2aad53119aa01ff9
SSDEEP

768:BMoaNhfb2Ru7DBIJ/NxkRs8FmVyx468Bx7d+niXvh5913LQ5ip3+QEsZLHJ+x37M:EbyatImEZYENbQixEs5HJOI

Score

8^/10

evasion persistence

Malware Config

Signatures

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
2268	attrib.exe
2232	attrib.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\java = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\java\\java.jar.7BW\""	reg.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\java = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\java\\java.jar.7BW\""	reg.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\java\Desktop.ini	java.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\java\Desktop.ini	attrib.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\tem	java.exe
File opened for modification	C:\Windows\tem	java.exe
File created	C:\Windows\tem	javaw.exe
File opened for modification	C:\Windows\tem	javaw.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
3048	reg.exe
516	reg.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1656	java.exe
584	javaw.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 3048	1656	java.exe	30
PID 1656 wrote to memory of 3048	1656	java.exe	30
PID 1656 wrote to memory of 3048	1656	java.exe	30
PID 1656 wrote to memory of 2268	1656	java.exe	31
PID 1656 wrote to memory of 2268	1656	java.exe	31
PID 1656 wrote to memory of 2268	1656	java.exe	31
PID 1656 wrote to memory of 2232	1656	java.exe	32
PID 1656 wrote to memory of 2232	1656	java.exe	32
PID 1656 wrote to memory of 2232	1656	java.exe	32
PID 1656 wrote to memory of 584	1656	java.exe	33
PID 1656 wrote to memory of 584	1656	java.exe	33
PID 1656 wrote to memory of 584	1656	java.exe	33
PID 584 wrote to memory of 516	584	javaw.exe	34
PID 584 wrote to memory of 516	584	javaw.exe	34
PID 584 wrote to memory of 516	584	javaw.exe	34

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2268	attrib.exe
2232	attrib.exe

C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\nun.jar
1⤵
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\system32\reg.exe
  reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v java /t REG_SZ /d "\"C:\Program Files\Java\jre7\bin\javaw.exe\" -jar \"C:\Users\Admin\AppData\Roaming\java\java.jar.7BW\"" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:3048
- C:\Windows\system32\attrib.exe
  attrib +s +h +r "C:\Users\Admin\AppData\Roaming\java\*.*"
  2⤵
  - Sets file to hidden
  - Drops desktop.ini file(s)
  - Views/modifies file attributes
  PID:2268
- C:\Windows\system32\attrib.exe
  attrib +s +h +r "C:\Users\Admin\AppData\Roaming\java"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2232
- C:\Program Files\Java\jre7\bin\javaw.exe
  "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\java\java.jar.7BW"
  2⤵
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:584
- - C:\Windows\system32\reg.exe
    reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v java /t REG_SZ /d "\"C:\Program Files\Java\jre7\bin\javaw.exe\" -jar \"C:\Users\Admin\AppData\Roaming\java\java.jar.7BW\"" /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\java\Desktop.ini

Filesize
63B

MD5
e783bdd20a976eaeaae1ff4624487420

SHA1
c2a44fab9df00b3e11582546b16612333c2f9286

SHA256
2f65fa9c7ed712f493782abf91467f869419a2f8b5adf23b44019c08190fa3f3

SHA512
8c883678e4625ef44f4885b8c6d7485196774f9cb0b9eee7dd18711749bcae474163df9965effcd13ecd1a33cd7265010c152f8504d6013e4f4d85d68a901a80

Download Submit
C:\Users\Admin\AppData\Roaming\java\java.jar.7BW

Filesize
49KB

MD5
1ec26b2e83ccbffc6a8552d92d99a0da

SHA1
0158ee62d67584fcf1fe3d9665325762fbb1ee6e

SHA256
f3980210a51b33547b4fec31f77458036247dfcd12baca421eedc6bd4761aecf

SHA512
43d04bb614e170d3eda83d1783dbc58148b863e0c98cb10293c7a31bcae92ebdf55ad1a583336fbd005390d6fca13370f7a64a8b4a266f0d2aad53119aa01ff9

Download Submit
C:\Users\Admin\rE35z0zNJO.tmp

Filesize
13B

MD5
d205ca25f16962add95e7dbf9fc77805

SHA1
43f8a51b1158aa963ad7a0135358505482cc3364

SHA256
465566ae005c236b8985fb4929ba3169685808c55da20b4baf1e82506a491cc3

SHA512
9b12e8eeafe0192bba2d72704e853b211f8046f1ccb05bf0e3bda79ef30fa533e2db7e49fbc54c77345412eebdcf76d6f5b8831c71eb98b505f9079d6d57f131

Download Submit
memory/584-85-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/584-91-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/584-95-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/584-97-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/584-108-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/584-109-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1656-80-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads