368711a2837d1ec238b881f9c94aa8fcc93a8229d78f3541d563310b79b1e333

Analysis

max time kernel
151s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 21:31

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General

Target

7b53c0fd96dbb2f5ca9ec46c42921585.exe
Size

11KB
MD5

7b53c0fd96dbb2f5ca9ec46c42921585
SHA1

b1313e6576795c78a5dd4695c17426bbdd75f14e
SHA256

368711a2837d1ec238b881f9c94aa8fcc93a8229d78f3541d563310b79b1e333
SHA512

c1e87ec66af8dbfff8c8263fc952e8eaae20d45db37e05f7cdd9363966d5f42a0f863c408986cb2127609d2223b786d4bff0a6ddeb85ea4abaaf1cde6b7024f8
SSDEEP

192:OLlXm0xffvqKPRhtJIIfh+TLNsqDWo/Ib1lnwPzGE4Zwhc9dMfbbmg:OpXm45POmh+vygWoEObYkiGfug

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
2764	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2256	jolinosk.exe

Loads dropped DLL 2 IoCs

pid	Process
2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe
2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x002f000000015cdd-3.dat	upx
behavioral1/memory/2760-9-0x0000000000230000-0x000000000023E000-memory.dmp	upx
behavioral1/memory/2256-11-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/2760-12-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\jolinos.dll	7b53c0fd96dbb2f5ca9ec46c42921585.exe
File created	C:\Windows\SysWOW64\jolinosk.exe	7b53c0fd96dbb2f5ca9ec46c42921585.exe
File opened for modification	C:\Windows\SysWOW64\jolinosk.exe	7b53c0fd96dbb2f5ca9ec46c42921585.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2256	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	28
PID 2760 wrote to memory of 2256	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	28
PID 2760 wrote to memory of 2256	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	28
PID 2760 wrote to memory of 2256	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	28
PID 2760 wrote to memory of 2764	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	29
PID 2760 wrote to memory of 2764	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	29
PID 2760 wrote to memory of 2764	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	29
PID 2760 wrote to memory of 2764	2760	7b53c0fd96dbb2f5ca9ec46c42921585.exe	29

C:\Users\Admin\AppData\Local\Temp\7b53c0fd96dbb2f5ca9ec46c42921585.exe
"C:\Users\Admin\AppData\Local\Temp\7b53c0fd96dbb2f5ca9ec46c42921585.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Windows\SysWOW64\jolinosk.exe
  C:\Windows\system32\jolinosk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2256
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\7b53c0fd96dbb2f5ca9ec46c42921585.exe.bat
  2⤵
  - Deletes itself
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7b53c0fd96dbb2f5ca9ec46c42921585.exe.bat

Filesize
182B

MD5
7751b8671fad0ce780608a0ad998e8d6

SHA1
793f13934873ab877fc29c27b475b696f9528f5a

SHA256
9aaac9016168127999588abc68ec29947cb75c29156dfeee1d8afb078acaf31c

SHA512
ff462c515ad26abf92aa17009a77d3099d43e97e5d5f6307bf1a5063d714cf213ad1f2bf157e09b6a8fc49a8ccf5c5af820f7814562763d7d9e55a0c95f33001

Download Submit
\Windows\SysWOW64\jolinosk.exe

Filesize
11KB

MD5
7b53c0fd96dbb2f5ca9ec46c42921585

SHA1
b1313e6576795c78a5dd4695c17426bbdd75f14e

SHA256
368711a2837d1ec238b881f9c94aa8fcc93a8229d78f3541d563310b79b1e333

SHA512
c1e87ec66af8dbfff8c8263fc952e8eaae20d45db37e05f7cdd9363966d5f42a0f863c408986cb2127609d2223b786d4bff0a6ddeb85ea4abaaf1cde6b7024f8

Download Submit
memory/2256-11-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2760-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2760-9-0x0000000000230000-0x000000000023E000-memory.dmp

Filesize
56KB

Download
memory/2760-12-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2760-14-0x0000000000230000-0x000000000023E000-memory.dmp

Filesize
56KB

Download