44caliber | 9785139b6e8bc5f53da68bed1b78f0567aa00d0de965f8e802e038a1243853e6

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 14:10

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General

Target

de3258d448ac5d543c996a6b4c0fd6b8.exe
Size

3.3MB
MD5

de3258d448ac5d543c996a6b4c0fd6b8
SHA1

44b4fe0e0d731011467f2f0c831f83801c0d068c
SHA256

9785139b6e8bc5f53da68bed1b78f0567aa00d0de965f8e802e038a1243853e6
SHA512

71edbb9e13fcdb5f3a86d79446dc4a87c50438b64e7b3cb108fe543be5954e06d3f6f4e9d34135f6baeb8bc19eafa32263e673fae2fdaed547354571b1cffdc7
SSDEEP

98304:1/xTTgkJENlhU7ZLsyEQrbRt64dtARJACo9x4RqsSTyIv:rTTguENAlLtPrb7Ri/ACo9mR+ys

Score

10^/10

44caliber echelon evasion spyware stealer themida trojan

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/877099784312328213/gbN3AhFr-HwOYeSmi-AjLnTIHhnG8GV5LfjEhIncHO-_rtFM2jafytOi5GkZCyhMgXTd

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Detects Echelon Stealer payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000f0000000140c6-26.dat	family_echelon
behavioral1/memory/2628-31-0x0000000001340000-0x00000000013D8000-memory.dmp	family_echelon

Echelon
Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.
stealer spyware echelon

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	de3258d448ac5d543c996a6b4c0fd6b8.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	de3258d448ac5d543c996a6b4c0fd6b8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	de3258d448ac5d543c996a6b4c0fd6b8.exe

Executes dropped EXE 3 IoCs

pid	Process
1404	RACKED.exe
3068	ProtonHack.exe
2628	ProtonHackers.exe

Loads dropped DLL 4 IoCs

pid	Process
2884	de3258d448ac5d543c996a6b4c0fd6b8.exe
2884	de3258d448ac5d543c996a6b4c0fd6b8.exe
1404	RACKED.exe
1404	RACKED.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 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000400000-0x0000000000C12000-memory.dmp	themida
behavioral1/memory/2884-32-0x0000000000400000-0x0000000000C12000-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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	de3258d448ac5d543c996a6b4c0fd6b8.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	freegeoip.app
3	freegeoip.app
4	api.ipify.org
5	api.ipify.org

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2884	de3258d448ac5d543c996a6b4c0fd6b8.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	ProtonHack.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	ProtonHack.exe

NTFS ADS 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\40==K5 >B 0::0.txt	RACKED.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\40==K5 >B 0::0.txt	RACKED.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3068	ProtonHack.exe
3068	ProtonHack.exe
3068	ProtonHack.exe
3068	ProtonHack.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	ProtonHack.exe
Token: SeDebugPrivilege	2628	ProtonHackers.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2632	DllHost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 1404	2884	de3258d448ac5d543c996a6b4c0fd6b8.exe	28
PID 2884 wrote to memory of 1404	2884	de3258d448ac5d543c996a6b4c0fd6b8.exe	28
PID 2884 wrote to memory of 1404	2884	de3258d448ac5d543c996a6b4c0fd6b8.exe	28
PID 2884 wrote to memory of 1404	2884	de3258d448ac5d543c996a6b4c0fd6b8.exe	28
PID 1404 wrote to memory of 3068	1404	RACKED.exe	29
PID 1404 wrote to memory of 3068	1404	RACKED.exe	29
PID 1404 wrote to memory of 3068	1404	RACKED.exe	29
PID 1404 wrote to memory of 3068	1404	RACKED.exe	29
PID 1404 wrote to memory of 2628	1404	RACKED.exe	30
PID 1404 wrote to memory of 2628	1404	RACKED.exe	30
PID 1404 wrote to memory of 2628	1404	RACKED.exe	30
PID 1404 wrote to memory of 2628	1404	RACKED.exe	30
PID 2628 wrote to memory of 2684	2628	ProtonHackers.exe	33
PID 2628 wrote to memory of 2684	2628	ProtonHackers.exe	33
PID 2628 wrote to memory of 2684	2628	ProtonHackers.exe	33

C:\Users\Admin\AppData\Local\Temp\de3258d448ac5d543c996a6b4c0fd6b8.exe
"C:\Users\Admin\AppData\Local\Temp\de3258d448ac5d543c996a6b4c0fd6b8.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\RACKED.exe
  "C:\Users\Admin\AppData\Local\Temp\RACKED.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Users\Admin\AppData\Local\Temp\ProtonHack.exe
    "C:\Users\Admin\AppData\Local\Temp\ProtonHack.exe"
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3068
- - C:\Users\Admin\AppData\Local\Temp\ProtonHackers.exe
    "C:\Users\Admin\AppData\Local\Temp\ProtonHackers.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2628 -s 1260
      4⤵
      PID:2684

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2632

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt

Filesize
242B

MD5
170a09439462ae3f536b2c5f4277a31c

SHA1
30b7f1e5e5ba603a2ffdfe00ef3305421b1ff07e

SHA256
b2af831b911e253a5cc8124fd0268d73d1aa3e4914b5c48606797995b8af0c8f

SHA512
fb436edecf61aef4e8f8359f6f1107cc744e0f663cb3c827cddc2fee377db3198b044bd4f6635f88be4dcdcce732d55601fe873f4fecacbc26d3cdf11321368e

Download Submit
C:\Users\Admin\AppData\Local\44\Process.txt

Filesize
443B

MD5
e4eb408b3076458077762744cf2645ef

SHA1
80d41125f0964e2415a8fbf8df7e064ccd0cbae5

SHA256
24774c8f8efdc068bbbe3e931476f5f409019da0ce3fbe56b983ef0c96f5c1c1

SHA512
d8cff83460638f9b29029fd48da9000bbfbd79c1f2ae6da12653d8dae8a8650067feb71ee6875e8d37042b1d0c32a38474fc4e194b0e4ce807fc8c6dd337aedf

Download Submit
C:\Users\Admin\AppData\Local\Temp\PDh_icon.ico

Filesize
295KB

MD5
418e0374acb48a29df66cd6cf77b2556

SHA1
1aec0f4a7810cea8a0356e3c40602f843e64e8b9

SHA256
a9a8e2eb897d271ae1aa442c1c315f3df7b377f33809e82d685452e90f7790fe

SHA512
8c6e57b180a57cec0593c77fd8377a4a27e6a64bfd4142e7382c0a4fc0fb95af7bc6daabaabcbc8289029da361ede25fa2bcdf26912a4da05f35f57993a39c13

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

Filesize
581KB

MD5
ae9fc2812c2a6d55c9f66b626963639f

SHA1
22b0e3477e075bb7fbe70121f51567d50c6d5d39

SHA256
c46ae05c8aecb322d21d504e5dc4665304c12f4a23da2222f58bc940ee53345c

SHA512
37ef5617f2fda51865f850a9d089e9e56de29508a1b153ada6fd8e32375fdd0f8750b9c5946508a5b0a7a06d61f271fc3d4ffca66d2a8ae72adfed11fc226e88

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

Filesize
64KB

MD5
4e3e3a145100c082b8643dc22a6b48f9

SHA1
b4954ec4d81ed8d0a5dbecae897337b8f812d657

SHA256
94532042c3dbdc12e95b830f3886085bc44245eb95744e272e40aa2e09332699

SHA512
748b524f288f96391342204ab16e8354915a831ebec9c180fd4a7450bc0385eb187d4f6b5f47d28e9c06db6940f598a9d757b0d919d34fe301f1b2464792d762

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

Filesize
449KB

MD5
af6dbbdcb44d920c0e41d166b60b26e4

SHA1
bd653c5d5985e0cf826fef5c080754a935527afd

SHA256
2c1a3eb1514f74d3f0c87e3ba9f205a809eebff725bdf105d50c2de351971592

SHA512
ebc0e10e4d5b2dd032ac09c364133cc8483ffc5fae2b39f9a65c11be06ee8b704e52bda47cdcecdcea357d51a4804ab418cadc908d68d6fb545139c5fafe8c83

Download Submit
\Users\Admin\AppData\Local\Temp\ProtonHack.exe

Filesize
274KB

MD5
9df1e86f0c44b525df31975949fe225a

SHA1
a1869bd91c12f6e96339d112d2acb0f018c31f6e

SHA256
13685d73ac437d3d5f976b9f600b183a489aa8871596ee9bec5d27ceb53c0b13

SHA512
7dfe7348e4934aa5d5b21af64ed0d90397fb430ea8dd6f5b104b69edc80e51766c6150f8db37749912dc47f604fa18dff4e9cfbf7a850248d16cf8acdd2d5bb6

Download Submit
\Users\Admin\AppData\Local\Temp\RACKED.exe

Filesize
575KB

MD5
1bedb8644adbf8aa590d04ebb31edb87

SHA1
5467bb793d56356a418c779dd2677c9ebf92a7a6

SHA256
5db197f06ea1b086ef988650989d7dc85388a1f6be6d4fc1cfa27231f05e587b

SHA512
5c56418fe8d4536d6227123df14204235f2c86276030ed6f2a420daf41b3a78614aa374916daa92a06bfdaf6a204f54f22cf97ba33f492b9376ab798313acdac

Download Submit
\Users\Admin\AppData\Local\Temp\RACKED.exe

Filesize
549KB

MD5
11ce8a0ba80fe5b237f361ef05f41507

SHA1
c6802f3aa82660932d5a96df939427c2417824d7

SHA256
3577fa9dc8ce5c58ec025589a5aa2802332f2ea0310cbe4cecd40250c60fd780

SHA512
d254c348d2dbaed48fc6cbeacaffdbe345283b4fbad1739884226b2d424c43492971f2b6ce9e9823ca2c4f0c7b727f0110343d18bc275110c187479ae1ff6d9d

Download Submit
memory/2628-55-0x0000000000B90000-0x0000000000C10000-memory.dmp

Filesize
512KB

Download
memory/2628-34-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2628-31-0x0000000001340000-0x00000000013D8000-memory.dmp

Filesize
608KB

Download
memory/2628-90-0x0000000000B90000-0x0000000000C10000-memory.dmp

Filesize
512KB

Download
memory/2628-89-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2632-41-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/2632-29-0x0000000000120000-0x0000000000122000-memory.dmp

Filesize
8KB

Download
memory/2884-0-0x0000000000400000-0x0000000000C12000-memory.dmp

Filesize
8.1MB

Download
memory/2884-28-0x0000000003160000-0x0000000003162000-memory.dmp

Filesize
8KB

Download
memory/2884-1-0x00000000775D0000-0x00000000775D2000-memory.dmp

Filesize
8KB

Download
memory/2884-32-0x0000000000400000-0x0000000000C12000-memory.dmp

Filesize
8.1MB

Download
memory/3068-35-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-30-0x0000000000F70000-0x0000000000FBA000-memory.dmp

Filesize
296KB

Download
memory/3068-36-0x0000000000EB0000-0x0000000000F30000-memory.dmp

Filesize
512KB

Download
memory/3068-88-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download