umbral | c27b4cfc3eeafbac10fceb4ccece9eb702bbc83f95868e2d265c3b3e938dea79

Analysis

max time kernel
43s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
11-03-2024 10:43

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General

Target

Napalm Loader.exe
Size

234KB
MD5

ea48746a371b2ad9de8f7cab0f43e535
SHA1

823ef16b55f39302472adafc3db346902ec5e822
SHA256

b045c2acabaee90a12b97375481f978f3680e97aa93b445b0f441c78f8fb161d
SHA512

71c6597049a61e11f64508cd0a0e0f5f0825b8aba19585845d376af075cd8ad14b534221287180dd5cde59615350a45733818ce63ce60b7f0e6a98ca7cddef7d
SSDEEP

6144:HloZM+rIkd8g+EtXHkv/iD4ctgClj8e1mBi:FoZtL+EP8Qpx

Score

10^/10

umbral stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2228-0-0x0000000000130000-0x0000000000170000-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 3 IoCs

pid	Process
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	Napalm Loader.exe
Token: SeIncreaseQuotaPrivilege	3056	wmic.exe
Token: SeSecurityPrivilege	3056	wmic.exe
Token: SeTakeOwnershipPrivilege	3056	wmic.exe
Token: SeLoadDriverPrivilege	3056	wmic.exe
Token: SeSystemProfilePrivilege	3056	wmic.exe
Token: SeSystemtimePrivilege	3056	wmic.exe
Token: SeProfSingleProcessPrivilege	3056	wmic.exe
Token: SeIncBasePriorityPrivilege	3056	wmic.exe
Token: SeCreatePagefilePrivilege	3056	wmic.exe
Token: SeBackupPrivilege	3056	wmic.exe
Token: SeRestorePrivilege	3056	wmic.exe
Token: SeShutdownPrivilege	3056	wmic.exe
Token: SeDebugPrivilege	3056	wmic.exe
Token: SeSystemEnvironmentPrivilege	3056	wmic.exe
Token: SeRemoteShutdownPrivilege	3056	wmic.exe
Token: SeUndockPrivilege	3056	wmic.exe
Token: SeManageVolumePrivilege	3056	wmic.exe
Token: 33	3056	wmic.exe
Token: 34	3056	wmic.exe
Token: 35	3056	wmic.exe
Token: SeIncreaseQuotaPrivilege	3056	wmic.exe
Token: SeSecurityPrivilege	3056	wmic.exe
Token: SeTakeOwnershipPrivilege	3056	wmic.exe
Token: SeLoadDriverPrivilege	3056	wmic.exe
Token: SeSystemProfilePrivilege	3056	wmic.exe
Token: SeSystemtimePrivilege	3056	wmic.exe
Token: SeProfSingleProcessPrivilege	3056	wmic.exe
Token: SeIncBasePriorityPrivilege	3056	wmic.exe
Token: SeCreatePagefilePrivilege	3056	wmic.exe
Token: SeBackupPrivilege	3056	wmic.exe
Token: SeRestorePrivilege	3056	wmic.exe
Token: SeShutdownPrivilege	3056	wmic.exe
Token: SeDebugPrivilege	3056	wmic.exe
Token: SeSystemEnvironmentPrivilege	3056	wmic.exe
Token: SeRemoteShutdownPrivilege	3056	wmic.exe
Token: SeUndockPrivilege	3056	wmic.exe
Token: SeManageVolumePrivilege	3056	wmic.exe
Token: 33	3056	wmic.exe
Token: 34	3056	wmic.exe
Token: 35	3056	wmic.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe
Token: SeShutdownPrivilege	2624	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

pid	Process
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe
2624	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 3056	2228	Napalm Loader.exe	28
PID 2228 wrote to memory of 3056	2228	Napalm Loader.exe	28
PID 2228 wrote to memory of 3056	2228	Napalm Loader.exe	28
PID 2624 wrote to memory of 2644	2624	chrome.exe	32
PID 2624 wrote to memory of 2644	2624	chrome.exe	32
PID 2624 wrote to memory of 2644	2624	chrome.exe	32
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2240	2624	chrome.exe	33
PID 2624 wrote to memory of 2980	2624	chrome.exe	34
PID 2624 wrote to memory of 2980	2624	chrome.exe	34
PID 2624 wrote to memory of 2980	2624	chrome.exe	34
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35
PID 2624 wrote to memory of 1744	2624	chrome.exe	35

C:\Users\Admin\AppData\Local\Temp\Napalm Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Napalm Loader.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3056

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:2624
- 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,0x7fef5c79758,0x7fef5c79768,0x7fef5c79778
  2⤵
  PID:2644
- 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=1156 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:2
  2⤵
  PID:2240
- 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=1524 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:8
  2⤵
  PID:2980
- 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=1632 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:8
  2⤵
  PID:1744
- 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=2256 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:1
  2⤵
  PID:1748
- 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=2264 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:1
  2⤵
  PID:2176
- 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=1600 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:2
  2⤵
  PID:696
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1360 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:1
  2⤵
  PID:820
- 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=3648 --field-trial-handle=1244,i,17696846006527495240,413983000537334811,131072 /prefetch:8
  2⤵
  PID:2284

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:1680

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\GCM Store\Encryption\000006.dbtmp

Filesize
16B

MD5
aefd77f47fb84fae5ea194496b44c67a

SHA1
dcfbb6a5b8d05662c4858664f81693bb7f803b82

SHA256
4166bf17b2da789b0d0cc5c74203041d98005f5d4ef88c27e8281e00148cd611

SHA512
b733d502138821948267a8b27401d7c0751e590e1298fda1428e663ccd02f55d0d2446ff4bc265bdcdc61f952d13c01524a5341bc86afc3c2cde1d8589b2e1c3

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
5KB

MD5
2b394f5f712756b0b13c92b089e7fbce

SHA1
03c423e82511b0dc528d4b834a894718f60e1984

SHA256
16053698a8f61cb773fd7af0f04581e791a178636150744256ecb35733dcada8

SHA512
6ce4a52c7381182102bd14e0a46872d745a20da4bfa1b59b3d4ce7c9c77cca3353faccd05dccf7a0e71db601124c59e7b00a56c26ea46a2b12cb2856c36837ba

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

Filesize
5KB

MD5
ef9855ed8c37a237f6a12f30672ac3cf

SHA1
14de4f224483e5808fdfed5650db92f733ca0cbf

SHA256
93b580f98e4216a3417249fd0687032c343a07f2a2888dc59b21e0a55783de6d

SHA512
46f2a819a2089863e097f6eb9f65b303b438c753395a5dbbf760350cd79500bc84e0c63b616805a09409bacef5bad417930541a9aabb8296dbb774e50fb00575

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

Filesize
16B

MD5
18e723571b00fb1694a3bad6c78e4054

SHA1
afcc0ef32d46fe59e0483f9a3c891d3034d12f32

SHA256
8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

SHA512
43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

Download Submit
memory/2228-0-0x0000000000130000-0x0000000000170000-memory.dmp

Filesize
256KB

Download
memory/2228-1-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/2228-2-0x000000001AAC0000-0x000000001AB40000-memory.dmp

Filesize
512KB

Download
memory/2228-3-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download