umbral | 81046d6d4e474115dd898d8e4718bc2ba144928461baa26e23f26d73d8e3f2f7

Analysis

max time kernel
149s
max time network
141s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
submitted
29-06-2023 16:59

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General

Target

RbxCheats.exe
Size

217KB
MD5

84fe5aaf9d71e59205c851af53d6a1c7
SHA1

1b93e136c567dce28cccd900a02b694d9f488d86
SHA256

81046d6d4e474115dd898d8e4718bc2ba144928461baa26e23f26d73d8e3f2f7
SHA512

db3bfcbccd1b6e22754fd40841f2b2f0d229852879ab1c10e214d8185e5c29f8a8d3e318182c80a2887cf77f7e59aa3e95088b2901eb96720afd9e4f7d775a2d
SSDEEP

3072:WlP/chtWkOIGSAvD6vdnsUSaNZZDOAuIXk0IIIIIIEIIIIIIIIIIIlTIIIIIIIII:OcyHIGadsUSsZDO7+8eNHpDS

Score

10^/10

umbral stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/memory/1236-54-0x0000000001060000-0x000000000109C000-memory.dmp	family_umbral
behavioral1/memory/1236-55-0x000000001A6A0000-0x000000001A720000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1512	chrome.exe
1512	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	RbxCheats.exe
Token: 33	1548	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1548	AUDIODG.EXE
Token: 33	1548	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1548	AUDIODG.EXE
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe
Token: SeShutdownPrivilege	1512	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

pid	Process
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe
1512	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 1664	1512	chrome.exe	32
PID 1512 wrote to memory of 1664	1512	chrome.exe	32
PID 1512 wrote to memory of 1664	1512	chrome.exe	32
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1392	1512	chrome.exe	34
PID 1512 wrote to memory of 1604	1512	chrome.exe	35
PID 1512 wrote to memory of 1604	1512	chrome.exe	35
PID 1512 wrote to memory of 1604	1512	chrome.exe	35
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36
PID 1512 wrote to memory of 1600	1512	chrome.exe	36

C:\Users\Admin\AppData\Local\Temp\RbxCheats.exe
"C:\Users\Admin\AppData\Local\Temp\RbxCheats.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1236

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2008

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x57c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1548

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1512
- 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=0xc0,0xc4,0xc8,0x94,0xcc,0x7feee169758,0x7feee169768,0x7feee169778
  2⤵
  PID:1664
- 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=1192 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:2
  2⤵
  PID:1392
- 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=1496 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:1604
- 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=1616 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:1600
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2192 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:1
  2⤵
  PID:832
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2308 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:1
  2⤵
  PID:284
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1364 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:2
  2⤵
  PID:2316
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3692 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:1
  2⤵
  PID:2384
- 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=3816 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:2404
- 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=3832 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:2412
- 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=3848 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:2604
- 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=3816 --field-trial-handle=1224,i,16195217173393463696,16542597281064519242,131072 /prefetch:8
  2⤵
  PID:2612

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:1080

Network

MITRE ATT&CK Enterprise v6

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\Extension State\000004.dbtmp

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

Filesize
264KB

MD5
f50f89a0a91564d0b8a211f8921aa7de

SHA1
112403a17dd69d5b9018b8cede023cb3b54eab7d

SHA256
b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

SHA512
bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

Filesize
4KB

MD5
df9958a1793a28a62afe7211acf4222c

SHA1
437c2973003f9bc029d41fbfb0c8fd1079e0c968

SHA256
0cb9e33e87d76cc34113517cf38f19ac8d464a6a1d1fcdf67f0c7562452ff17c

SHA512
b99c8182194369baf22f8fd663efdca2f94d8d3a86f6837de8bf86170428bcee0b88f6abc6f4fb1193798174c55e2a4d45f416b135752c1fd4cd069fc2d22a9e

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

Filesize
4KB

MD5
2fe4d16fea51a475beaa34b97d73a9a0

SHA1
028407399584893108761bd986d1c1d9ca0886bc

SHA256
2596a5dcb0292a15bb8d566bccfe8e19779e2ab9e0a79975def90b2a24c7babb

SHA512
acf89fc5d182197dbe5faa965de5ea74faf7524d248e5249b9af9882725eee7527134fe19eef88506ce764dd07308dfb97cb6a8b82e7a6e1f4d84bd77129cb35

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

Filesize
88KB

MD5
ba7da1f62e43bad7d2b9a7fb564e504b

SHA1
f6e9f01bc7ca5ef40a048451af648dcb388d5279

SHA256
7aee7957e86507bbafc1c641136639ef83e76e73ef37fd47206ae6f1580ba546

SHA512
ca12712625b89e0bb77c354c099d2519f8df027b3d13b9843d91d8e1c7a71baac00a1787edbe25b3509daf35e1a061b91a90ced4d1259e52a4d1b2e24b03f803

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

Filesize
176KB

MD5
56b828eaa9bbfcf55e84d8f9a65a6e4e

SHA1
121b784e385d5a846e73a02f95d798c499b40ead

SHA256
20cf6387ec127be989894c9fe1b8653842a977bf41a5cc7453fc2bce21ae8c20

SHA512
958ac9d051e942f6dcb78fd8d8002676e2f63b918e82ba5848b7a8ee38f821729a5647bd6b7173a3d1d7e6f8a4d2d74377ae5c1e11b0f481980120c45e4e2e8c

Download Submit
memory/1236-54-0x0000000001060000-0x000000000109C000-memory.dmp

Filesize
240KB

Download
memory/1236-55-0x000000001A6A0000-0x000000001A720000-memory.dmp

Filesize
512KB

Download
memory/1236-56-0x000000001A6A0000-0x000000001A720000-memory.dmp

Filesize
512KB

Download