77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9

Analysis

max time kernel
64s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06-11-2022 15:09

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General

Target

77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe
Size

43KB
MD5

06e592b484074ef1e5ee6f667c3d165d
SHA1

3309ecf4c40d5b0613f899258cc190e7e138dcf3
SHA256

77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9
SHA512

f7a0a89a999a11479f762697ecc6c55c51a5bcb28d0b54bae8c38517e0444123d9ff0966976d3a77549d6445413630f599020c86ca3ec0a1cbaea138a07f017f
SSDEEP

384:jGMdL7ba3crk7qKZwr1D+um22Nw/tXRmmEtrNxvb53y2DCuLfgMBK2VuJYgHMOC/:jpO7Do1jDaw/q3Nm2VsMc1MOh

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
548	cmd.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe

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

System Information Discovery
T1082

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
280	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	280	tasklist.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1928	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 548	1928	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe	29
PID 1928 wrote to memory of 548	1928	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe	29
PID 1928 wrote to memory of 548	1928	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe	29
PID 1928 wrote to memory of 548	1928	77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe	29
PID 548 wrote to memory of 280	548	cmd.exe	31
PID 548 wrote to memory of 280	548	cmd.exe	31
PID 548 wrote to memory of 280	548	cmd.exe	31
PID 548 wrote to memory of 280	548	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe
"C:\Users\Admin\AppData\Local\Temp\77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c tasklist&&del 77c790b6f8a3dbc6d6d53c3cf526ac49a2c9c3201c7db01b90bc3bf5f3c956f9.exe
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:548
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:280

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/280-58-0x0000000000000000-mapping.dmp

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memory/548-57-0x0000000000000000-mapping.dmp

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memory/1928-56-0x0000000075E11000-0x0000000075E13000-memory.dmp

Filesize
8KB

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