44caliber | 969e1396d2f6932f10c6de742659667070e3d6158d9e5a7d9a16d7254ca3afc7

Analysis

max time kernel
24s
max time network
21s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
01-07-2024 15:57

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General

Target

Solara.exe
Size

489KB
MD5

304fb1af10c5964bb55597f7c87e5ee3
SHA1

7774fd280dc74e4b8846f7938261b7e22373b576
SHA256

969e1396d2f6932f10c6de742659667070e3d6158d9e5a7d9a16d7254ca3afc7
SHA512

3602afe1c97c78cdb871fe40dde53fc8e9c4766532e3d4ffccacf189e5e38e32c9bd55c681085ec0d5e62d9340a0724537143afd2b39705550b8368561280453
SSDEEP

12288:7Jf/DdUC83OIgFc+tYjhLFH8rX+t498oHLMYK4K:7N/BUBb+tYjBFH8d7rM

Score

10^/10

44caliber evasion spyware stealer themida trojan

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1247933862773002240/9Ju3ByvnHXBxYOd33G7M9TjSgLAgPA4USgjS9eElxrDf_-b46LbXhTNC2EWbI4iMzaGU

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

cd57e4c171d6e8f5ea8b8f824a6a7316.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ cd57e4c171d6e8f5ea8b8f824a6a7316.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

cd57e4c171d6e8f5ea8b8f824a6a7316.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Executes dropped EXE 3 IoCs

Processes:

Insidious.exeSolaraBootstrapper.execd57e4c171d6e8f5ea8b8f824a6a7316.exe

pid process

4668 Insidious.exe
1756 SolaraBootstrapper.exe
3248 cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Loads dropped DLL 5 IoCs

Processes:

cd57e4c171d6e8f5ea8b8f824a6a7316.exe

pid	process
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dll	themida
behavioral1/memory/3248-1511-0x0000000180000000-0x0000000180B0D000-memory.dmp	themida
behavioral1/memory/3248-1512-0x0000000180000000-0x0000000180B0D000-memory.dmp	themida
behavioral1/memory/3248-1513-0x0000000180000000-0x0000000180B0D000-memory.dmp	themida
behavioral1/memory/3248-1514-0x0000000180000000-0x0000000180B0D000-memory.dmp	themida
behavioral1/memory/3248-1520-0x0000000180000000-0x0000000180B0D000-memory.dmp	themida

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

cd57e4c171d6e8f5ea8b8f824a6a7316.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service
T1102

Processes:

flow ioc

12 raw.githubusercontent.com
14 raw.githubusercontent.com
20 raw.githubusercontent.com
23 raw.githubusercontent.com
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 freegeoip.app
7 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

cd57e4c171d6e8f5ea8b8f824a6a7316.exe

pid process

3248 cd57e4c171d6e8f5ea8b8f824a6a7316.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
12	raw.githubusercontent.com
14	raw.githubusercontent.com
20	raw.githubusercontent.com
23	raw.githubusercontent.com

flow	ioc
6	freegeoip.app
7	freegeoip.app

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

Insidious.exeSolaraBootstrapper.execd57e4c171d6e8f5ea8b8f824a6a7316.exe

pid	process
4668	Insidious.exe
4668	Insidious.exe
4668	Insidious.exe
1756	SolaraBootstrapper.exe
1756	SolaraBootstrapper.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Insidious.exeSolaraBootstrapper.execd57e4c171d6e8f5ea8b8f824a6a7316.exe

description	pid	process
Token: SeDebugPrivilege	4668	Insidious.exe
Token: SeDebugPrivilege	1756	SolaraBootstrapper.exe
Token: SeDebugPrivilege	3248	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

Solara.exeSolaraBootstrapper.exe

description	pid	process	target process
PID 404 wrote to memory of 4668	404	Solara.exe	Insidious.exe
PID 404 wrote to memory of 4668	404	Solara.exe	Insidious.exe
PID 404 wrote to memory of 1756	404	Solara.exe	SolaraBootstrapper.exe
PID 404 wrote to memory of 1756	404	Solara.exe	SolaraBootstrapper.exe
PID 404 wrote to memory of 1756	404	Solara.exe	SolaraBootstrapper.exe
PID 1756 wrote to memory of 3248	1756	SolaraBootstrapper.exe	cd57e4c171d6e8f5ea8b8f824a6a7316.exe
PID 1756 wrote to memory of 3248	1756	SolaraBootstrapper.exe	cd57e4c171d6e8f5ea8b8f824a6a7316.exe

C:\Users\Admin\AppData\Local\Temp\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:404
- C:\Users\Admin\AppData\Local\Temp\Insidious.exe
  "C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4668
- C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe
    "C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks whether UAC is enabled
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Insidious.exe

Filesize
303KB

MD5
4983f032e0e84628d9e228436fdc5de6

SHA1
575cf03d4ab0f1c86bc864ce6da83cacdd9be621

SHA256
35bccba601ac65b50cbcdc2f953c7fe185163756858457e73aff0b6a02a3b445

SHA512
eb77f9f7f139492cdd38bf2ad9bdaf1aca58ca7b9d3cfc094e1b1aa9b6473631f8eab34ee68aa758c08fc36a824d9386de031b72b15cdbf11e9f0ceb961c109a

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dll

Filesize
488KB

MD5
851fee9a41856b588847cf8272645f58

SHA1
ee185a1ff257c86eb19d30a191bf0695d5ac72a1

SHA256
5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca

SHA512
cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.WinForms.dll

Filesize
37KB

MD5
4cf94ffa50fd9bdc0bb93cceaede0629

SHA1
3e30eca720f4c2a708ec53fd7f1ba9e778b4f95f

SHA256
50b2e46c99076f6fa9c33e0a98f0fe3a2809a7c647bb509066e58f4c7685d7e6

SHA512
dc400518ef2f68920d90f1ce66fbb8f4dde2294e0efeecd3d9329aa7a66e1ab53487b120e13e15f227ea51784f90208c72d7fbfa9330d9b71dd9a1a727d11f98

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Wpf.dll

Filesize
43KB

MD5
34ec990ed346ec6a4f14841b12280c20

SHA1
6587164274a1ae7f47bdb9d71d066b83241576f0

SHA256
1e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409

SHA512
b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\get-intrinsic\.nycrc

Filesize
139B

MD5
d0104f79f0b4f03bbcd3b287fa04cf8c

SHA1
54f9d7adf8943cb07f821435bb269eb4ba40ccc2

SHA256
997785c50b0773e5e18bf15550fbf57823c634fefe623cd37b3c83696402ad0a

SHA512
daf9b5445cfc02397f398adfa0258f2489b70699dfec6ca7e5b85afe5671fdcabe59edee332f718f5e5778feb1e301778dffe93bb28c1c0914f669659bad39c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\has-proto\.eslintrc

Filesize
43B

MD5
c28b0fe9be6e306cc2ad30fe00e3db10

SHA1
af79c81bd61c9a937fca18425dd84cdf8317c8b9

SHA256
0694050195fc694c5846b0a2a66b437ac775da988f0a779c55fb892597f7f641

SHA512
e3eca17804522ffa4f41e836e76e397a310a20e8261a38115b67e8b644444153039d04198fb470f45be2997d2c7a72b15bd4771a02c741b3cbc072ea6ef432e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\hasown\.nycrc

Filesize
216B

MD5
c2ab942102236f987048d0d84d73d960

SHA1
95462172699187ac02eaec6074024b26e6d71cff

SHA256
948366fea3b423a46366326d0bb2e54b08abd1cf0b243678ba6625740c40da5a

SHA512
e36b20c16ceeb090750f3865efc8d7fd983ae4e8b41c30cc3865d2fd4925bf5902627e1f1ed46c0ff2453f076ef9de34be899ef57754b29cd158440071318479

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\vary\LICENSE

Filesize
1KB

MD5
13babc4f212ce635d68da544339c962b

SHA1
4881ad2ec8eb2470a7049421047c6d076f48f1de

SHA256
bd47ce7b88c7759630d1e2b9fcfa170a0f1fde522be09e13fb1581a79d090400

SHA512
40e30174433408e0e2ed46d24373b12def47f545d9183b7bce28d4ddd8c8bb528075c7f20e118f37661db9f1bba358999d81a14425eb3e0a4a20865dfcb53182

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Newtonsoft.Json.dll

Filesize
695KB

MD5
195ffb7167db3219b217c4fd439eedd6

SHA1
1e76e6099570ede620b76ed47cf8d03a936d49f8

SHA256
e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

SHA512
56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\VCRUNTIME140.dll

Filesize
99KB

MD5
7a2b8cfcd543f6e4ebca43162b67d610

SHA1
c1c45a326249bf0ccd2be2fbd412f1a62fb67024

SHA256
7d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f

SHA512
e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\WebView2Loader.dll

Filesize
133KB

MD5
a0bd0d1a66e7c7f1d97aedecdafb933f

SHA1
dd109ac34beb8289030e4ec0a026297b793f64a3

SHA256
79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36

SHA512
2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Wpf.Ui.dll

Filesize
5.2MB

MD5
aead90ab96e2853f59be27c4ec1e4853

SHA1
43cdedde26488d3209e17efff9a51e1f944eb35f

SHA256
46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

SHA512
f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\bin\path.txt

Filesize
34B

MD5
0e2184f1c7464b6617329fb18f107b4f

SHA1
6f22f98471e33c9db10d6f6f1728e98852e25b8f

SHA256
dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb

SHA512
8e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dll

Filesize
4.2MB

MD5
f71b342220b8f8935abe5ea0b1e5f30c

SHA1
a70d41dbc456d548e790af717575b1f83e3f38b5

SHA256
dec8c51c89452b183201e58e4cfceffb0924c4c1f7729841a739086711ff021f

SHA512
d6ba2d0eecb2bd70ea727c7bd86cce75fe535e4a7688eb6fc6334e30f568d24d0b6661b8873ddb88c1bb75dbf772fae215b101545ff85e6461a2b05b85dfe05f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe

Filesize
90KB

MD5
d84e7f79f4f0d7074802d2d6e6f3579e

SHA1
494937256229ef022ff05855c3d410ac3e7df721

SHA256
dcfc2b4fa3185df415855ec54395d9c36612f68100d046d8c69659da01f7d227

SHA512
ed7b0ac098c8184b611b83158eaa86619001e74dba079d398b34ac694ce404ba133c2baf43051840132d6a3a089a375550072543b9fab2549d57320d13502260

Download Submit
C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe

Filesize
13KB

MD5
6557bd5240397f026e675afb78544a26

SHA1
839e683bf68703d373b6eac246f19386bb181713

SHA256
a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239

SHA512
f2399d34898a4c0c201372d2dd084ee66a66a1c3eae949e568421fe7edada697468ef81f4fcab2afd61eaf97bcb98d6ade2d97295e2f674e93116d142e892e97

Download Submit
\Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dll

Filesize
522KB

MD5
e31f5136d91bad0fcbce053aac798a30

SHA1
ee785d2546aec4803bcae08cdebfd5d168c42337

SHA256
ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671

SHA512
a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6

Download Submit
\Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dll

Filesize
113KB

MD5
75365924730b0b2c1a6ee9028ef07685

SHA1
a10687c37deb2ce5422140b541a64ac15534250f

SHA256
945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b

SHA512
c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1

Download Submit
memory/1756-37-0x0000000004D60000-0x0000000004D72000-memory.dmp

Filesize
72KB

Download
memory/1756-35-0x0000000000B10000-0x0000000000B1A000-memory.dmp

Filesize
40KB

Download
memory/1756-34-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/3248-1496-0x0000023039780000-0x00000230397A2000-memory.dmp

Filesize
136KB

Download
memory/3248-1511-0x0000000180000000-0x0000000180B0D000-memory.dmp

Filesize
11.1MB

Download
memory/3248-1500-0x000002303A590000-0x000002303A60E000-memory.dmp

Filesize
504KB

Download
memory/3248-1495-0x0000023039B50000-0x0000023039C02000-memory.dmp

Filesize
712KB

Download
memory/3248-1493-0x0000023039A90000-0x0000023039B48000-memory.dmp

Filesize
736KB

Download
memory/3248-1492-0x0000023039D50000-0x000002303A28C000-memory.dmp

Filesize
5.2MB

Download
memory/3248-1490-0x000002301F230000-0x000002301F24A000-memory.dmp

Filesize
104KB

Download
memory/3248-1522-0x000002303EB80000-0x000002303EB8E000-memory.dmp

Filesize
56KB

Download
memory/3248-1520-0x0000000180000000-0x0000000180B0D000-memory.dmp

Filesize
11.1MB

Download
memory/3248-1498-0x0000023039730000-0x000002303973E000-memory.dmp

Filesize
56KB

Download
memory/3248-1512-0x0000000180000000-0x0000000180B0D000-memory.dmp

Filesize
11.1MB

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memory/3248-1513-0x0000000180000000-0x0000000180B0D000-memory.dmp

Filesize
11.1MB

Download
memory/3248-1514-0x0000000180000000-0x0000000180B0D000-memory.dmp

Filesize
11.1MB

Download
memory/3248-1521-0x00007FFE88520000-0x00007FFE88544000-memory.dmp

Filesize
144KB

Download
memory/3248-1519-0x000002303E980000-0x000002303E9B8000-memory.dmp

Filesize
224KB

Download
memory/3248-1518-0x0000023039A30000-0x0000023039A38000-memory.dmp

Filesize
32KB

Download
memory/4668-14-0x00007FFE770D3000-0x00007FFE770D4000-memory.dmp

Filesize
4KB

Download
memory/4668-13-0x0000022709CC0000-0x0000022709D12000-memory.dmp

Filesize
328KB

Download
memory/4668-28-0x00007FFE770D0000-0x00007FFE77ABC000-memory.dmp

Filesize
9.9MB

Download
memory/4668-682-0x00007FFE770D0000-0x00007FFE77ABC000-memory.dmp

Filesize
9.9MB

Download