bab1853454ca6fdd3acd471254101db1b805b601e309a49ec7b4b1fbcfc47ad7

Analysis

max time kernel
149s
max time network
153s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09-07-2024 22:00

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General

Target

cryptowall.exe
Size

240KB
MD5

47363b94cee907e2b8926c1be61150c7
SHA1

ca963033b9a285b8cd0044df38146a932c838071
SHA256

45317968759d3e37282ceb75149f627d648534c5b4685f6da3966d8f6fca662d
SHA512

93dfaafc183360829448887a112dd49c90ec5fe50dcd7c7bbc06c1c8daa206eeea5577f726d906446322c731d0520e93700d5ff9cefd730fba347c72b7325068
SSDEEP

3072:xkeyloECBch6ZCGBGSmHJ0y5lj6jdojK7+MGOXpXx8z3Lp7Yoq:xGlnCIwMpj6ijKfxx8z3F0V

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\INF\netrasa.PNF	svchost.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1416	4776	WerFault.exe	72

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	chrome.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133650362211130124"	chrome.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3560	chrome.exe
3560	chrome.exe

Suspicious behavior: LoadsDriver 6 IoCs

pid	Process
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
628	Process not Found

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs

pid	Process
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: 33	4776	cryptowall.exe
Token: SeIncBasePriorityPrivilege	4776	cryptowall.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	1576	svchost.exe
Token: SeCreatePagefilePrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeLoadDriverPrivilege	1576	svchost.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe
Token: SeShutdownPrivilege	3560	chrome.exe
Token: SeCreatePagefilePrivilege	3560	chrome.exe

Suspicious use of FindShellTrayWindow 26 IoCs

pid	Process
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe
3560	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3560 wrote to memory of 1356	3560	chrome.exe	77
PID 3560 wrote to memory of 1356	3560	chrome.exe	77
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 4584	3560	chrome.exe	79
PID 3560 wrote to memory of 1512	3560	chrome.exe	80
PID 3560 wrote to memory of 1512	3560	chrome.exe	80
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81
PID 3560 wrote to memory of 2144	3560	chrome.exe	81

C:\Users\Admin\AppData\Local\Temp\cryptowall.exe
"C:\Users\Admin\AppData\Local\Temp\cryptowall.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 516
  2⤵
  - Program crash
  PID:1416

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Enumerates system info in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffbe5449758,0x7ffbe5449768,0x7ffbe5449778
  2⤵
  PID:1356
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1636 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:2
  2⤵
  PID:4584
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1832 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:8
  2⤵
  PID:1512
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2072 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:8
  2⤵
  PID:2144
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2868 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:1
  2⤵
  PID:1528
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2876 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:1
  2⤵
  PID:3800
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4492 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:1
  2⤵
  PID:2884
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4900 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:8
  2⤵
  PID:2108
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:8
  2⤵
  PID:512
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4984 --field-trial-handle=1836,i,7280999985373852761,6844350815484382205,131072 /prefetch:8
  2⤵
  PID:4780

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:2420

C:\Windows\System32\SystemSettingsBroker.exe
C:\Windows\System32\SystemSettingsBroker.exe -Embedding
1⤵
PID:2492

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k localservicenetworkrestricted -s RmSvc
1⤵
PID:2520

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k localservice -s SstpSvc
1⤵
PID:376

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k netsvcs -s NetSetupSvc
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1576

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k netsvcs -s RasMan
1⤵
PID:3740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

Filesize
371B

MD5
976781b8f1e06bad4c8600ddb14e1b37

SHA1
07d1894dffcb5e81b76d4acd8b17b8f11b2e225c

SHA256
657a401c2bb2db0595594c37bf85be01fb4ec8f2f6ea45aceeb05d84ed20901d

SHA512
8a6b32336ea012d44fc5a44aeda282aa3eb74084ee89fb54e7db1fcb95eebcba74a6735f4425890074949edbf62b41dcf3c9adb9bd9b01aa0e86dfd84e398884

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

Filesize
5KB

MD5
d5ee7be2185c8a47c789ceebbaf8930b

SHA1
0f64993003b21c8ef14409bdbc2109f8f6379d1b

SHA256
174b60a1d8460945f2a7dee4dcafcb215aed89b9a5ebc1f6243f5c13e21934e9

SHA512
5cc88c027b6b6b2a72ea6061307f2e440361e2eaf020462e4b1349eea59744ffcc91c83726501b3ea116f54c47d9bdb070af7d4fd5b242a987a3cf65b10f08d6

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences

Filesize
12KB

MD5
5a495dbd96221d654eb45038ede33d76

SHA1
9270faf602489c14c9710f39d72440021e9b5859

SHA256
79806dbbe84b847f72cb2ae2701026bb8224d2ac4c925925cf80820cf3032858

SHA512
2acc47c05683cb51d3b9c161be11d5b3b2d96f35e07c15ad74d031becb3d148b9b056adc9b291d0937801d9f3bdfaf9c2fd2050a58e679de9af69b1d70a14143

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

Filesize
286KB

MD5
bbdc6f59693503b002841a92c22afc9e

SHA1
10bd9ce6c9b5348a41ff5cd22925b78cbbd8ce1f

SHA256
a44065710a4287f7a7992e04fc9fff96cd69467baede1826992574a2941c3431

SHA512
60f34c19dffc7ef1cf50388bd492ced16d5d15ca54693aab74fff7ca9a8f42155f997bf2c5b0e7cdee2be014ef42a8a41f79a917225939648ae3b97d2331f07f

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

Filesize
2B

MD5
99914b932bd37a50b983c5e7c90ae93b

SHA1
bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

SHA256
44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

SHA512
27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

Download Submit
C:\Windows\INF\netrasa.PNF

Filesize
22KB

MD5
80648b43d233468718d717d10187b68d

SHA1
a1736e8f0e408ce705722ce097d1adb24ebffc45

SHA256
8ab9a39457507e405ade5ef9d723e0f89bc46d8d8b33d354b00d95847f098380

SHA512
eec0ac7e7abcf87b3f0f4522b0dd95c658327afb866ceecff3c9ff0812a521201d729dd71d43f3ac46536f8435d4a49ac157b6282077c7c1940a6668f3b3aea9

Download Submit