nymaim | 99bb5c62c5a6a8d22b3a2e8c15a6981764b24c847fbbe0b0e883d5e2aacaee6c

General

Target

file.exe
Size

1.2MB
MD5

1ab96fdea0c6ddb22827ac4489607577
SHA1

45435d2043a661ea73178a35375b0f3a52e641cd
SHA256

99bb5c62c5a6a8d22b3a2e8c15a6981764b24c847fbbe0b0e883d5e2aacaee6c
SHA512

5d36a19979b8bfc5de2e87fe6ba6253403480ad9eccb9549683b79ca3798ed2c1a923257443280fa5b03db17085663f4bd3d4dd91112b9b3ffb96e17e5be2e44
SSDEEP

24576:piz6ZQ2BCwwLZanC/jISDv1K0mDZUnfc24AdcTC+raexXvsHgagk9vUHgZIY7eC1:i6dB6LZNjpb1HmDKfB4qcTprbXvWJgNS

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-SN26P.tmpPrintFolders.exeviTpt6y0.exe

pid process

4776 is-SN26P.tmp
3900 PrintFolders.exe
1264 viTpt6y0.exe

pid	process
4776	is-SN26P.tmp
3900	PrintFolders.exe
1264	viTpt6y0.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-SN26P.tmp

pid process

4776 is-SN26P.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
4776	is-SN26P.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-SN26P.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\is-24JO7.tmp	is-SN26P.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\is-UGEDD.tmp	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\is-9BBGE.tmp	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\is-CBSJD.tmp	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ES9RL.tmp	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\is-IOJ77.tmp	is-SN26P.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-SN26P.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-SN26P.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

2292 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

3900 PrintFolders.exe
3900 PrintFolders.exe
3900 PrintFolders.exe
3900 PrintFolders.exe
3900 PrintFolders.exe
3900 PrintFolders.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PrintFolders.exe

pid process

3900 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2292 taskkill.exe

pid	process
2292	taskkill.exe

pid	process
3900	PrintFolders.exe
3900	PrintFolders.exe
3900	PrintFolders.exe
3900	PrintFolders.exe
3900	PrintFolders.exe
3900	PrintFolders.exe

pid	process
3900	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	2292	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-SN26P.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 5048 wrote to memory of 4776	5048	file.exe	is-SN26P.tmp
PID 5048 wrote to memory of 4776	5048	file.exe	is-SN26P.tmp
PID 5048 wrote to memory of 4776	5048	file.exe	is-SN26P.tmp
PID 4776 wrote to memory of 3900	4776	is-SN26P.tmp	PrintFolders.exe
PID 4776 wrote to memory of 3900	4776	is-SN26P.tmp	PrintFolders.exe
PID 4776 wrote to memory of 3900	4776	is-SN26P.tmp	PrintFolders.exe
PID 3900 wrote to memory of 1264	3900	PrintFolders.exe	viTpt6y0.exe
PID 3900 wrote to memory of 1264	3900	PrintFolders.exe	viTpt6y0.exe
PID 3900 wrote to memory of 1264	3900	PrintFolders.exe	viTpt6y0.exe
PID 3900 wrote to memory of 3964	3900	PrintFolders.exe	cmd.exe
PID 3900 wrote to memory of 3964	3900	PrintFolders.exe	cmd.exe
PID 3900 wrote to memory of 3964	3900	PrintFolders.exe	cmd.exe
PID 3964 wrote to memory of 2292	3964	cmd.exe	taskkill.exe
PID 3964 wrote to memory of 2292	3964	cmd.exe	taskkill.exe
PID 3964 wrote to memory of 2292	3964	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:5048

C:\Users\Admin\AppData\Local\Temp\is-A4472.tmp\is-SN26P.tmp
"C:\Users\Admin\AppData\Local\Temp\is-A4472.tmp\is-SN26P.tmp" /SL4 $8005E "C:\Users\Admin\AppData\Local\Temp\file.exe" 1038453 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4776

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:3900

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\viTpt6y0.exe
4⤵
- Executes dropped EXE
PID:1264

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:3964

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2292

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
f83c300bf79200bca358c2736cf8ceba

SHA1
9486f5d197d9a70a090e47e59c0fe7dab94e6d94

SHA256
b837914fe9609dbf7d5db16d48c007b4355f774f20cca9c4e36ae519cbb594d1

SHA512
f7361d51faebdd6d869243aeb4ade507ccd6b07491fb9f0d46a640f86541cd66cbc420f34b50e7858a2f80d63c3876b037ba68d028f1858e6b381d640215b7b7

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

Filesize
1.4MB

MD5
f83c300bf79200bca358c2736cf8ceba

SHA1
9486f5d197d9a70a090e47e59c0fe7dab94e6d94

SHA256
b837914fe9609dbf7d5db16d48c007b4355f774f20cca9c4e36ae519cbb594d1

SHA512
f7361d51faebdd6d869243aeb4ade507ccd6b07491fb9f0d46a640f86541cd66cbc420f34b50e7858a2f80d63c3876b037ba68d028f1858e6b381d640215b7b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1UD53.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-A4472.tmp\is-SN26P.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-A4472.tmp\is-SN26P.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\viTpt6y0.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\viTpt6y0.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1264-145-0x0000000000000000-mapping.dmp

Download
memory/2292-154-0x0000000000000000-mapping.dmp

Download
memory/3900-148-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3900-143-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3900-144-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3900-142-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3900-139-0x0000000000000000-mapping.dmp

Download
memory/3900-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3900-155-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3964-153-0x0000000000000000-mapping.dmp

Download
memory/4776-134-0x0000000000000000-mapping.dmp

Download
memory/5048-138-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/5048-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/5048-156-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads