nymaim | 16629977b0e9324ea86e1cdb7ea5c782d6043ea56d64b35dd167de4547774804

General

Target

file.exe
Size

1.4MB
MD5

0f47b10f9ff12abc1402109be616a3a1
SHA1

f84e4a57747020efa1e0bb11cfc0f498ff835bcf
SHA256

16629977b0e9324ea86e1cdb7ea5c782d6043ea56d64b35dd167de4547774804
SHA512

b916161ae035e9f574d93179d2529db88d77350b8a64b41677c5a60148d684b696012f49c27f2e7981751e85434ae23ea1d7ccefde13f0683d29dc7fb46898de
SSDEEP

24576:NizQxlLVW0UY+IihbaAogkFyCPmbKVCGkAFo6/yNgHil0i/LsGyYSagZIY7eCLx7:mQxlLVs5FrogwyCGDAcgHmSPNeVin

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

is-CIBK0.tmpPrintFolders.exewdgm79g1.exe

pid process

644 is-CIBK0.tmp
4532 PrintFolders.exe
2040 wdgm79g1.exe

pid	process
644	is-CIBK0.tmp
4532	PrintFolders.exe
2040	wdgm79g1.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PrintFolders.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	PrintFolders.exe

Loads dropped DLL 1 IoCs

Processes:

is-CIBK0.tmp

pid process

644 is-CIBK0.tmp
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
644	is-CIBK0.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-CIBK0.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-CIBK0.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-U3TSG.tmp	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LVOLO.tmp	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7B275.tmp	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-AANP8.tmp	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-JDP4U.tmp	is-CIBK0.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LS52J.tmp	is-CIBK0.tmp

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1400 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

4532 PrintFolders.exe
4532 PrintFolders.exe
4532 PrintFolders.exe
4532 PrintFolders.exe
4532 PrintFolders.exe
4532 PrintFolders.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PrintFolders.exe

pid process

4532 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1400 taskkill.exe

pid	process
1400	taskkill.exe

pid	process
4532	PrintFolders.exe
4532	PrintFolders.exe
4532	PrintFolders.exe
4532	PrintFolders.exe
4532	PrintFolders.exe
4532	PrintFolders.exe

pid	process
4532	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	1400	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-CIBK0.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 540 wrote to memory of 644	540	file.exe	is-CIBK0.tmp
PID 540 wrote to memory of 644	540	file.exe	is-CIBK0.tmp
PID 540 wrote to memory of 644	540	file.exe	is-CIBK0.tmp
PID 644 wrote to memory of 4532	644	is-CIBK0.tmp	PrintFolders.exe
PID 644 wrote to memory of 4532	644	is-CIBK0.tmp	PrintFolders.exe
PID 644 wrote to memory of 4532	644	is-CIBK0.tmp	PrintFolders.exe
PID 4532 wrote to memory of 2040	4532	PrintFolders.exe	wdgm79g1.exe
PID 4532 wrote to memory of 2040	4532	PrintFolders.exe	wdgm79g1.exe
PID 4532 wrote to memory of 2040	4532	PrintFolders.exe	wdgm79g1.exe
PID 4532 wrote to memory of 1392	4532	PrintFolders.exe	cmd.exe
PID 4532 wrote to memory of 1392	4532	PrintFolders.exe	cmd.exe
PID 4532 wrote to memory of 1392	4532	PrintFolders.exe	cmd.exe
PID 1392 wrote to memory of 1400	1392	cmd.exe	taskkill.exe
PID 1392 wrote to memory of 1400	1392	cmd.exe	taskkill.exe
PID 1392 wrote to memory of 1400	1392	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:540

C:\Users\Admin\AppData\Local\Temp\is-CHJ74.tmp\is-CIBK0.tmp
"C:\Users\Admin\AppData\Local\Temp\is-CHJ74.tmp\is-CIBK0.tmp" /SL4 $C0046 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1235078 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:644

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4532

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\wdgm79g1.exe
4⤵
- Executes dropped EXE
PID:2040

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1400

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.6MB

MD5
096eaa32de46677b252fa255e7f93032

SHA1
0264df59c95408a99d39cfdd26b1d5f6f47d12ec

SHA256
303d80876b488334fd2a46da23016f0ef7fb100f9c12c822322d43605f059dfa

SHA512
72e37e6cb4f6e1e4de13df9bc06e1c25e75826bcf47b418148441e914cd7736e3d74607c8e9c5f65c72133f20a3ca6254e74952027d96f184a27bd32a47bcb70

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.6MB

MD5
096eaa32de46677b252fa255e7f93032

SHA1
0264df59c95408a99d39cfdd26b1d5f6f47d12ec

SHA256
303d80876b488334fd2a46da23016f0ef7fb100f9c12c822322d43605f059dfa

SHA512
72e37e6cb4f6e1e4de13df9bc06e1c25e75826bcf47b418148441e914cd7736e3d74607c8e9c5f65c72133f20a3ca6254e74952027d96f184a27bd32a47bcb70

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CHJ74.tmp\is-CIBK0.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CHJ74.tmp\is-CIBK0.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GUG8A.tmp\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\wdgm79g1.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\wdgm79g1.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/540-155-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/540-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/540-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/644-134-0x0000000000000000-mapping.dmp

Download
memory/1392-152-0x0000000000000000-mapping.dmp

Download
memory/1400-153-0x0000000000000000-mapping.dmp

Download
memory/2040-144-0x0000000000000000-mapping.dmp

Download
memory/4532-143-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/4532-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4532-147-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/4532-142-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/4532-154-0x0000000000400000-0x00000000013A3000-memory.dmp

Filesize
15.6MB

Download
memory/4532-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads