6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd

Analysis

max time kernel
37s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 18:23

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General

Target

6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe
Size

175KB
MD5

04507f09010f494cddd6e430d0f36df0
SHA1

32e1a730d3556e80e329107677a4b761fb21057a
SHA256

6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd
SHA512

17e21bf1e6ecb3909b042af120ae2de195851b55fb6c8179b1de7183bdc9e1ce50c3277548221808763ea2c22e356ea5cf7710403c659114a73858fa120cb684
SSDEEP

3072:HUa4ujEO3O5dKr+mTN5wUyFVoEnsTtTkcagnaLnyE/ubLcPx2RyAPoDvhP4oB+Ra:Ku85Qrr4UA5cnswbgPxgyAPEvhPiRmwy

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1672	oshell32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1132-55-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/files/0x0008000000005c50-57.dat	upx
behavioral1/files/0x0008000000005c50-58.dat	upx
behavioral1/files/0x0008000000005c50-60.dat	upx
behavioral1/memory/1672-62-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/memory/1132-63-0x0000000000400000-0x000000000047F000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe
1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WinMemoryAsgn3591489641.exe	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe
File created	C:\Windows\SysWOW64\oshell32.exe	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe
File opened for modification	C:\Windows\SysWOW64\oshell32.exe	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 1672	1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe	27
PID 1132 wrote to memory of 1672	1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe	27
PID 1132 wrote to memory of 1672	1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe	27
PID 1132 wrote to memory of 1672	1132	6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe	27

C:\Users\Admin\AppData\Local\Temp\6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe
"C:\Users\Admin\AppData\Local\Temp\6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\oshell32.exe
  "C:\Windows\system32\oshell32.exe" \erit "C:\Users\Admin\AppData\Local\Temp\6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd.exe"
  2⤵
  - Executes dropped EXE
  PID:1672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\oshell32.exe

Filesize
175KB

MD5
04507f09010f494cddd6e430d0f36df0

SHA1
32e1a730d3556e80e329107677a4b761fb21057a

SHA256
6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd

SHA512
17e21bf1e6ecb3909b042af120ae2de195851b55fb6c8179b1de7183bdc9e1ce50c3277548221808763ea2c22e356ea5cf7710403c659114a73858fa120cb684

Download Submit
\Windows\SysWOW64\oshell32.exe

Filesize
175KB

MD5
04507f09010f494cddd6e430d0f36df0

SHA1
32e1a730d3556e80e329107677a4b761fb21057a

SHA256
6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd

SHA512
17e21bf1e6ecb3909b042af120ae2de195851b55fb6c8179b1de7183bdc9e1ce50c3277548221808763ea2c22e356ea5cf7710403c659114a73858fa120cb684

Download Submit
\Windows\SysWOW64\oshell32.exe

Filesize
175KB

MD5
04507f09010f494cddd6e430d0f36df0

SHA1
32e1a730d3556e80e329107677a4b761fb21057a

SHA256
6b53f487e2301b39f155c1b4c081087c2990891453f68f2aa30af73f6713d8cd

SHA512
17e21bf1e6ecb3909b042af120ae2de195851b55fb6c8179b1de7183bdc9e1ce50c3277548221808763ea2c22e356ea5cf7710403c659114a73858fa120cb684

Download Submit
memory/1132-54-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download
memory/1132-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1132-56-0x0000000002CC0000-0x0000000002CD0000-memory.dmp

Filesize
64KB

Download
memory/1132-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1672-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download