f285822ef8c947a87e556858a8332ed26edda052e597c67a7831753c376e01b4 | Triage

Analysis

max time kernel
41s
max time network
119s
platform
windows10_x64
resource
win10v20210408
submitted
13-06-2021 15:51

Sharing

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General

Target

c34157e025416d3ddf0a8610fa2e8b98.exe
Size

515KB
MD5

c34157e025416d3ddf0a8610fa2e8b98
SHA1

03005c0c1469b7dbe9eff095bfd3ecbc3a713811
SHA256

f285822ef8c947a87e556858a8332ed26edda052e597c67a7831753c376e01b4
SHA512

16de23d61d7dad4f239980ac02aa765be38bc42647c63ede13441a73c002bd0b91a4681159cca9170f41fa003a7725926b61c09a124fec700028de7c425679cd

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/580-119-0x0000000000400000-0x00000000004F6000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exe

description	pid	Process	procid_target
PID 4808 set thread context of 580	4808	c34157e025416d3ddf0a8610fa2e8b98.exe	78

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exe

pid	Process
4808	c34157e025416d3ddf0a8610fa2e8b98.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exe

pid	Process
580	c34157e025416d3ddf0a8610fa2e8b98.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exe

description	pid	Process
Token: SeShutdownPrivilege	580	c34157e025416d3ddf0a8610fa2e8b98.exe
Token: SeCreatePagefilePrivilege	580	c34157e025416d3ddf0a8610fa2e8b98.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exe

pid	Process
4808	c34157e025416d3ddf0a8610fa2e8b98.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

c34157e025416d3ddf0a8610fa2e8b98.exec34157e025416d3ddf0a8610fa2e8b98.exe

description	pid	Process	procid_target
PID 4808 wrote to memory of 580	4808	c34157e025416d3ddf0a8610fa2e8b98.exe	78
PID 4808 wrote to memory of 580	4808	c34157e025416d3ddf0a8610fa2e8b98.exe	78
PID 4808 wrote to memory of 580	4808	c34157e025416d3ddf0a8610fa2e8b98.exe	78
PID 4808 wrote to memory of 580	4808	c34157e025416d3ddf0a8610fa2e8b98.exe	78
PID 580 wrote to memory of 1220	580	c34157e025416d3ddf0a8610fa2e8b98.exe	80
PID 580 wrote to memory of 1220	580	c34157e025416d3ddf0a8610fa2e8b98.exe	80
PID 580 wrote to memory of 1220	580	c34157e025416d3ddf0a8610fa2e8b98.exe	80

C:\Users\Admin\AppData\Local\Temp\c34157e025416d3ddf0a8610fa2e8b98.exe
"C:\Users\Admin\AppData\Local\Temp\c34157e025416d3ddf0a8610fa2e8b98.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Users\Admin\AppData\Local\Temp\c34157e025416d3ddf0a8610fa2e8b98.exe
  "C:\Users\Admin\AppData\Local\Temp\c34157e025416d3ddf0a8610fa2e8b98.exe"
  2⤵
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\e4fmkDJNGBWno7nr.bat" "
    3⤵
    PID:1220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\e4fmkDJNGBWno7nr.bat

MD5
f087d5df809b2237c3bec173d33ec5d8

SHA1
9dba812e0f2610b0ab219c14510d75eb178f032b

SHA256
a1615c931c2ef16a5a9038cce46ca22a0f2efc081a8e829b49407a2fa1f8a5da

SHA512
a8c8e3d977c71db85d92011a4bd8910925c9d917720340bfb5c72943667af0781b491c42b3897ca77a4ede3365d933770ea8a4012657c19889ead4ec20021af1

Download Submit
memory/580-118-0x00000000004F4AD0-mapping.dmp

Download
memory/580-119-0x0000000000400000-0x00000000004F6000-memory.dmp

Filesize
984KB

Download
memory/580-120-0x0000000000580000-0x000000000062E000-memory.dmp

Filesize
696KB

Download
memory/1220-121-0x0000000000000000-mapping.dmp

Download
memory/4808-116-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/4808-117-0x0000000002210000-0x0000000002217000-memory.dmp

Filesize
28KB

Download