nymaim | ad9f4083baed608e0927c915b18b9577e7baf7e3a38782def370a50e7f929860

General

Target

file.exe
Size

1.3MB
MD5

e9c404f0f0851e0a18d4a46601dee51e
SHA1

7fa9bea1c68da15ddd548f65c0558c3cabc16f56
SHA256

ad9f4083baed608e0927c915b18b9577e7baf7e3a38782def370a50e7f929860
SHA512

c564d001f2a0aa327cf3ca5ef9a7f4b2423eb4fd2b415d50ad10b7c52e17326b4390e971e43fb2ef5989a8e0ce35096b346366955bb5390739c431efa7f1fa37
SSDEEP

24576:tiz5uzgaiubgYwc1iU3OPlmHV3YNQ39yOo4clYtROu7JuOtgZIY7eCLxYiy:G5uzgWHlOP+OygvyXnk1NeViy

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-20S91.tmpPrintFolders.exePeiHTEcPctb1AU.exe

pid process

1624 is-20S91.tmp
3960 PrintFolders.exe
2304 PeiHTEcPctb1AU.exe

pid	process
1624	is-20S91.tmp
3960	PrintFolders.exe
2304	PeiHTEcPctb1AU.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	PrintFolders.exe

Loads dropped DLL 1 IoCs

Processes:

is-20S91.tmp

pid process

1624 is-20S91.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
1624	is-20S91.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-20S91.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\is-QSUK4.tmp	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\is-77UGV.tmp	is-20S91.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\is-SHEJS.tmp	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\is-PRR61.tmp	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\is-JVEQQ.tmp	is-20S91.tmp
File created	C:\Program Files (x86)\PrintFolders\is-O52TF.tmp	is-20S91.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-20S91.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

2940 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

3960 PrintFolders.exe
3960 PrintFolders.exe
3960 PrintFolders.exe
3960 PrintFolders.exe
3960 PrintFolders.exe
3960 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2940 taskkill.exe

pid	process
2940	taskkill.exe

pid	process
3960	PrintFolders.exe
3960	PrintFolders.exe
3960	PrintFolders.exe
3960	PrintFolders.exe
3960	PrintFolders.exe
3960	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	2940	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-20S91.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 3912 wrote to memory of 1624	3912	file.exe	is-20S91.tmp
PID 3912 wrote to memory of 1624	3912	file.exe	is-20S91.tmp
PID 3912 wrote to memory of 1624	3912	file.exe	is-20S91.tmp
PID 1624 wrote to memory of 3960	1624	is-20S91.tmp	PrintFolders.exe
PID 1624 wrote to memory of 3960	1624	is-20S91.tmp	PrintFolders.exe
PID 1624 wrote to memory of 3960	1624	is-20S91.tmp	PrintFolders.exe
PID 3960 wrote to memory of 2304	3960	PrintFolders.exe	PeiHTEcPctb1AU.exe
PID 3960 wrote to memory of 2304	3960	PrintFolders.exe	PeiHTEcPctb1AU.exe
PID 3960 wrote to memory of 2304	3960	PrintFolders.exe	PeiHTEcPctb1AU.exe
PID 3960 wrote to memory of 5088	3960	PrintFolders.exe	cmd.exe
PID 3960 wrote to memory of 5088	3960	PrintFolders.exe	cmd.exe
PID 3960 wrote to memory of 5088	3960	PrintFolders.exe	cmd.exe
PID 5088 wrote to memory of 2940	5088	cmd.exe	taskkill.exe
PID 5088 wrote to memory of 2940	5088	cmd.exe	taskkill.exe
PID 5088 wrote to memory of 2940	5088	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:3912

C:\Users\Admin\AppData\Local\Temp\is-0PITL.tmp\is-20S91.tmp
"C:\Users\Admin\AppData\Local\Temp\is-0PITL.tmp\is-20S91.tmp" /SL4 $60090 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1084329 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1624

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 use of WriteProcessMemory
PID:3960

C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\PeiHTEcPctb1AU.exe
4⤵
- Executes dropped EXE
PID:2304

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:5088

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2940

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
fadc477e13448e6398325a4f952e138f

SHA1
2796925cd06263db618c0c1f3f5bec3f58421fac

SHA256
483b4f4cb957aff0012696e5c35c4d2e2e7847483c6a0253b0080467fd8a37fa

SHA512
bef434bbc25fd2c6af5cadecb2930b014affdf37fb98eadaab3cff37c944ad91c4f8c4129fc6629f292c2b27a7fc6581918c87f2bc0afbda1de58d771e88eee3

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

Filesize
1.4MB

MD5
fadc477e13448e6398325a4f952e138f

SHA1
2796925cd06263db618c0c1f3f5bec3f58421fac

SHA256
483b4f4cb957aff0012696e5c35c4d2e2e7847483c6a0253b0080467fd8a37fa

SHA512
bef434bbc25fd2c6af5cadecb2930b014affdf37fb98eadaab3cff37c944ad91c4f8c4129fc6629f292c2b27a7fc6581918c87f2bc0afbda1de58d771e88eee3

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0PITL.tmp\is-20S91.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0PITL.tmp\is-20S91.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-62BV3.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\PeiHTEcPctb1AU.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\PeiHTEcPctb1AU.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1624-134-0x0000000000000000-mapping.dmp

Download
memory/2304-145-0x0000000000000000-mapping.dmp

Download
memory/2940-154-0x0000000000000000-mapping.dmp

Download
memory/3912-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3912-156-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3912-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3960-143-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3960-144-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3960-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3960-152-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3960-142-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3960-155-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3960-139-0x0000000000000000-mapping.dmp

Download
memory/5088-153-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads